organic compounds
24-Acetyl-8,11,14-trioxa-24,27-diazapentacyclo[19.5.1.122,26.02,7.015,20]octacosa-2,4,6,15(20),16,18-hexaen-28-one
aDepartment of Chemistry, Vietnam National University, 144 Xuan Thuy, Cau Giay, Hanoi, Vietnam, bOrganic Chemistry Department, Russian Peoples Friendship University, Miklukho-Maklaya St 6, Moscow, 117198, Russia, and cX-Ray Structural Centre, A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov St, B-334, Moscow 119991, Russian Federation
*Correspondence e-mail: vkh@xray.ineos.ac.ru
The title compound, C25H28N2O5, is a product of the Petrenko–Kritchenko condensation of N-acetylpiperidone with 1,5-bis(2-formylphenoxy)-3-oxapentane and ammonium acetate. The molecule comprises a fused pentacyclic system containing an aza-14-crown-3-ether macrocycle, two piperidone and two benzene rings. The aza-14-crown-3-ether ring adopts a bowl conformation. The dihedral angle between the benzene rings fused to the aza-14-crown-4-ether unit is 70.18 (4)°. The central piperidone ring has a boat conformation, whereas the terminal piperidone ring adopts a chair conformation. The conformation of the central piperidone ring is determined by two intramolecular N—H⋯O hydrogen bonds. In the crystal, molecules are linked by weak C—H⋯O interactions into chains along [010].
Related literature
For general background to the design, synthesis and applications of macrocyclic ligands for coordination and supramolecular chemistry, see: Hiraoka (1978); Pedersen (1988); Gokel & Murillo (1996); Bradshaw & Izatt (1997). For related compounds, see: Levov et al. (2006, 2008); Komarova et al. (2008); Anh et al. (2008, 2012a,b); Hieu et al. (2011); Khieu et al. (2011); Sokol et al. (2011).
Experimental
Crystal data
|
Refinement
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Data collection: APEX2 (Bruker, 2005); cell SAINT (Bruker, 2001); data reduction: SAINT; program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: SHELXTL; software used to prepare material for publication: SHELXTL.
Supporting information
https://doi.org/10.1107/S1600536812027274/aa2068sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536812027274/aa2068Isup2.hkl
Supporting information file. DOI: https://doi.org/10.1107/S1600536812027274/aa2068Isup3.cml
Ammonium acetate (3.0 g, 39.0 mmol) was added to a solution of 1,5-bis(2-formylphenoxy)-3-oxapentane (3.14 g, 10.0 mmol) and N-acetylpiperidone (1.41 g, 10.0 mmol) in ethanol-acetic acid mixture (30 ml 1 ml). The reaction mixture was stirred at 293 K for 3 days (monitoring by TLC until disappearance of the starting heterocyclic ketone spot). At the end of the reaction, the formed precipitate was filtered off, washed with ethanol and re-crystallized from ethanol to give 2.54 g of white crystals of the title compound. Yield is 58%. M.p.= 500–502 K. IR (KBr), ν/cm-1: 1603, 1649, 1713, 3405, 3460. 1H NMR (CDCl3, 400 MHz, 300 K): δ = 2.37 (s, 3H, CH3C=O), 2.91 (m, 3H, H22, H26 and H27), 3.47 and 4.98 (both dd, 1H each, H1 and H21, J = 7.3 and 1.1), 3.92–4.10 (m, 12H, OCH2CH2OCH2CH2O, 2H23 and 2H25), 6.75–6.95 (m, 3H, Harom), 7.21–7.36 (m, 5H, Harom). Anal. Calcd. for C25H28N2O5: C, 68.79; H, 6.47; N, 6.42. Found: C, 69.03; H, 6.52; N, 6.43.
The hydrogen atom of the amino group was localized in the difference-Fourier map and refined isotropically with fixed isotropic displacement parameters [Uiso(H) = 1.2Ueq(N)]. The other hydrogen atoms were placed in calculated positions with C–H = 0.95–1.00 Å and refined in the riding model with fixed isotropic displacement parameters [Uiso(H) = 1.5Ueq(C) for the methyl group and 1.2Ueq(C) for the other groups].
Design, synthesis and applications of macrocyclic ligands for coordination and supramolecular chemistry draw very great attention of investigators during the last several decades (Hiraoka, 1978; Pedersen, 1988; Gokel & Murillo, 1996; Bradshaw & Izatt, 1997). Recently we have developed the effective methods of synthesis of azacrown
containing piperidine (Levov et al., 2006, 2008; Anh et al., 2008, 2012a, 2012b), perhydropyrimidine (Hieu et al., 2011), perhydrotriazine (Khieu et al., 2011) and bispidine (Komarova et al., 2008; Sokol et al., 2011) subunits.In attempts to apply this chemistry for obtaining of a macrocyclic ligand containing N-acylsubstituted bispidine moiety, we studied the Petrenko-Kritchenko condensation of the N-acetylpiperidone with 1,5-bis(2-formylphenoxy)-3-oxapentane and ammonium acetate. The reaction have proceeded smoothly to give the expected azacrown system with a good yield (Fig. 1).
The molecule of the title compound, C25H28 N2O5, comprises a fused pentacyclic system containing the aza-14-crown-3-ether macrocycle, two piperidone and two benzene rings (Fig. 2). The aza-14-crown-3-ether ring adopts a bowl conformation. The configuration of the C7—O8—C9—C10—O11—C12—C13—O14—C15 polyether chain is t–g(-)–t–t–g(+)–t (t = trans, 180°; g = gauche, ±60°). The dihedral angle between the planes of the benzene rings fused to the aza-14-crown-4-ether moiety is 70.18 (4)°. The central piperidone ring has a boat conformation, whereas the terminal piperidone ring adopts a chair conformation. Apparently, the conformation of the central piperidone ring is determined by the two intramolecular N–H···O hydrogen bonds (Table 1). The nitrogen N24 atom has a trigonal-planar geometry (sum of the bond angles is 359.8°), while the nitrogen N27 atom adopts a trigonal-pyramidal geometry (sum of the bond angles is 326.7°).
The molecule of the title compound possesses four asymmetric centers at the C1, C21, C22 and C26 carbon atoms and can have potentially numerous
The crystal of the title compound is racemic and consists of enantiomeric pairs with the following of the centers: rac-1R*, 21S*,22R*,26S*.In the crystal, the molecules are bound by the weak intermolecular C–H···O hydrogen bonding interactions into the chains along [010] (Fig. 3, Table 1). The crystal packing of the chains is stacking along the a axis (Fig. 3).
For general background to the design, synthesis and applications of macrocyclic ligands for coordination and supramolecular chemistry, see: Hiraoka (1978); Pedersen (1988); Gokel & Murillo (1996); Bradshaw & Izatt (1997). For related compounds, see: Levov et al. (2006, 2008); Komarova et al. (2008); Anh et al. (2008, 2012a,b); Hieu et al. (2011); Khieu et al. (2011); Sokol et al. (2011).
Data collection: APEX2 (Bruker, 2005); cell
SAINT (Bruker, 2001); data reduction: SAINT (Bruker, 2001); program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).C25H28N2O5 | F(000) = 1856 |
Mr = 436.49 | Dx = 1.334 Mg m−3 |
Orthorhombic, Pbca | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2ac 2ab | Cell parameters from 6757 reflections |
a = 17.1756 (6) Å | θ = 2.4–27.6° |
b = 11.1724 (4) Å | µ = 0.09 mm−1 |
c = 22.6546 (8) Å | T = 100 K |
V = 4347.3 (3) Å3 | Prism, colourless |
Z = 8 | 0.30 × 0.25 × 0.25 mm |
Bruker APEXII CCD diffractometer | 6326 independent reflections |
Radiation source: fine-focus sealed tube | 4682 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.069 |
φ and ω scans | θmax = 30.0°, θmin = 1.8° |
Absorption correction: multi-scan (SADABS; Sheldrick, 2003) | h = −24→24 |
Tmin = 0.973, Tmax = 0.977 | k = −15→15 |
54466 measured reflections | l = −31→31 |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.042 | Hydrogen site location: mixed |
wR(F2) = 0.106 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.00 | w = 1/[σ2(Fo2) + (0.0483P)2 + 1.18P] where P = (Fo2 + 2Fc2)/3 |
6326 reflections | (Δ/σ)max < 0.001 |
293 parameters | Δρmax = 0.34 e Å−3 |
0 restraints | Δρmin = −0.24 e Å−3 |
C25H28N2O5 | V = 4347.3 (3) Å3 |
Mr = 436.49 | Z = 8 |
Orthorhombic, Pbca | Mo Kα radiation |
a = 17.1756 (6) Å | µ = 0.09 mm−1 |
b = 11.1724 (4) Å | T = 100 K |
c = 22.6546 (8) Å | 0.30 × 0.25 × 0.25 mm |
Bruker APEXII CCD diffractometer | 6326 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 2003) | 4682 reflections with I > 2σ(I) |
Tmin = 0.973, Tmax = 0.977 | Rint = 0.069 |
54466 measured reflections |
R[F2 > 2σ(F2)] = 0.042 | 0 restraints |
wR(F2) = 0.106 | H atoms treated by a mixture of independent and constrained refinement |
S = 1.00 | Δρmax = 0.34 e Å−3 |
6326 reflections | Δρmin = −0.24 e Å−3 |
293 parameters |
Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes. |
Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > σ(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger. |
x | y | z | Uiso*/Ueq | ||
C1 | 0.14643 (7) | 0.45850 (10) | 0.11628 (5) | 0.0150 (2) | |
H1 | 0.1927 | 0.4136 | 0.1012 | 0.018* | |
C2 | 0.07641 (7) | 0.40656 (10) | 0.08499 (5) | 0.0176 (2) | |
C3 | 0.08519 (8) | 0.30961 (11) | 0.04720 (6) | 0.0242 (3) | |
H3 | 0.1359 | 0.2793 | 0.0398 | 0.029* | |
C4 | 0.02150 (9) | 0.25559 (12) | 0.01993 (6) | 0.0302 (3) | |
H4 | 0.0288 | 0.1886 | −0.0053 | 0.036* | |
C5 | −0.05235 (8) | 0.30019 (12) | 0.02980 (6) | 0.0276 (3) | |
H5 | −0.0960 | 0.2627 | 0.0120 | 0.033* | |
C6 | −0.06308 (8) | 0.39996 (12) | 0.06580 (6) | 0.0238 (3) | |
H6 | −0.1137 | 0.4321 | 0.0715 | 0.029* | |
C7 | 0.00101 (7) | 0.45237 (11) | 0.09343 (5) | 0.0194 (2) | |
O8 | −0.00310 (5) | 0.54876 (8) | 0.13029 (4) | 0.0238 (2) | |
C9 | −0.07793 (7) | 0.59780 (13) | 0.14482 (6) | 0.0262 (3) | |
H9A | −0.1115 | 0.5361 | 0.1632 | 0.031* | |
H9B | −0.1042 | 0.6285 | 0.1090 | 0.031* | |
C10 | −0.06217 (8) | 0.69751 (13) | 0.18737 (6) | 0.0273 (3) | |
H10A | −0.0258 | 0.7561 | 0.1696 | 0.033* | |
H10B | −0.1112 | 0.7394 | 0.1973 | 0.033* | |
O11 | −0.02887 (5) | 0.64651 (8) | 0.23893 (4) | 0.0245 (2) | |
C12 | 0.01097 (7) | 0.73098 (12) | 0.27487 (6) | 0.0244 (3) | |
H12A | −0.0268 | 0.7808 | 0.2968 | 0.029* | |
H12B | 0.0435 | 0.7842 | 0.2501 | 0.029* | |
C13 | 0.06106 (7) | 0.66211 (12) | 0.31701 (6) | 0.0235 (3) | |
H13A | 0.0838 | 0.7167 | 0.3468 | 0.028* | |
H13B | 0.0296 | 0.6010 | 0.3378 | 0.028* | |
O14 | 0.12189 (5) | 0.60544 (8) | 0.28352 (4) | 0.01997 (18) | |
C15 | 0.16485 (7) | 0.51843 (11) | 0.31095 (5) | 0.0174 (2) | |
C16 | 0.16080 (7) | 0.49369 (12) | 0.37114 (5) | 0.0222 (3) | |
H16 | 0.1278 | 0.5396 | 0.3960 | 0.027* | |
C17 | 0.20549 (8) | 0.40101 (12) | 0.39451 (6) | 0.0241 (3) | |
H17 | 0.2017 | 0.3825 | 0.4353 | 0.029* | |
C18 | 0.25533 (7) | 0.33568 (12) | 0.35910 (6) | 0.0220 (3) | |
H18 | 0.2856 | 0.2725 | 0.3753 | 0.026* | |
C19 | 0.26073 (7) | 0.36366 (11) | 0.29901 (5) | 0.0178 (2) | |
H19 | 0.2962 | 0.3205 | 0.2749 | 0.021* | |
C20 | 0.21530 (6) | 0.45337 (10) | 0.27385 (5) | 0.0149 (2) | |
C21 | 0.21819 (6) | 0.47517 (10) | 0.20788 (5) | 0.0139 (2) | |
H21 | 0.2596 | 0.4215 | 0.1917 | 0.017* | |
C22 | 0.24208 (6) | 0.60694 (10) | 0.19154 (5) | 0.0144 (2) | |
H22 | 0.2505 | 0.6539 | 0.2286 | 0.017* | |
C23 | 0.31604 (7) | 0.61447 (11) | 0.15252 (5) | 0.0174 (2) | |
H23A | 0.3315 | 0.6993 | 0.1480 | 0.021* | |
H23B | 0.3593 | 0.5717 | 0.1723 | 0.021* | |
N24 | 0.30278 (6) | 0.56178 (9) | 0.09399 (4) | 0.0182 (2) | |
C25 | 0.23402 (7) | 0.60548 (11) | 0.06232 (5) | 0.0194 (2) | |
H25A | 0.2272 | 0.5590 | 0.0255 | 0.023* | |
H25B | 0.2417 | 0.6905 | 0.0515 | 0.023* | |
C26 | 0.16073 (7) | 0.59325 (10) | 0.10078 (5) | 0.0160 (2) | |
H26 | 0.1145 | 0.6273 | 0.0798 | 0.019* | |
N27 | 0.14364 (6) | 0.43716 (9) | 0.18055 (4) | 0.01508 (19) | |
H27 | 0.1049 (9) | 0.4816 (13) | 0.1957 (6) | 0.018* | |
C28 | 0.17742 (7) | 0.66361 (10) | 0.15626 (5) | 0.0159 (2) | |
O28 | 0.14686 (5) | 0.75881 (8) | 0.16807 (4) | 0.02178 (19) | |
C29 | 0.35168 (7) | 0.48363 (12) | 0.06601 (6) | 0.0224 (3) | |
O29 | 0.33441 (7) | 0.43974 (10) | 0.01789 (4) | 0.0370 (3) | |
C30 | 0.42915 (7) | 0.45517 (12) | 0.09395 (6) | 0.0250 (3) | |
H30A | 0.4494 | 0.3803 | 0.0774 | 0.037* | |
H30B | 0.4225 | 0.4464 | 0.1367 | 0.037* | |
H30C | 0.4659 | 0.5203 | 0.0859 | 0.037* |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.0160 (5) | 0.0145 (5) | 0.0144 (5) | 0.0005 (4) | −0.0013 (4) | −0.0007 (4) |
C2 | 0.0214 (6) | 0.0161 (5) | 0.0153 (5) | −0.0028 (4) | −0.0044 (4) | 0.0024 (4) |
C3 | 0.0305 (7) | 0.0199 (6) | 0.0223 (6) | 0.0040 (5) | −0.0115 (5) | −0.0018 (5) |
C4 | 0.0432 (8) | 0.0197 (6) | 0.0276 (7) | 0.0000 (6) | −0.0188 (6) | −0.0032 (5) |
C5 | 0.0351 (7) | 0.0251 (7) | 0.0225 (6) | −0.0113 (6) | −0.0147 (6) | 0.0067 (5) |
C6 | 0.0200 (6) | 0.0304 (7) | 0.0212 (6) | −0.0071 (5) | −0.0041 (5) | 0.0069 (5) |
C7 | 0.0207 (6) | 0.0207 (6) | 0.0167 (5) | −0.0047 (5) | −0.0024 (4) | 0.0033 (4) |
O8 | 0.0147 (4) | 0.0290 (5) | 0.0278 (5) | −0.0003 (3) | 0.0011 (3) | −0.0074 (4) |
C9 | 0.0138 (5) | 0.0349 (7) | 0.0298 (7) | 0.0033 (5) | 0.0000 (5) | 0.0000 (6) |
C10 | 0.0203 (6) | 0.0303 (7) | 0.0312 (7) | 0.0083 (5) | −0.0001 (5) | 0.0006 (6) |
O11 | 0.0229 (4) | 0.0251 (5) | 0.0254 (5) | 0.0009 (4) | −0.0005 (4) | −0.0010 (4) |
C12 | 0.0203 (6) | 0.0234 (6) | 0.0296 (7) | 0.0037 (5) | 0.0038 (5) | −0.0072 (5) |
C13 | 0.0199 (6) | 0.0281 (7) | 0.0225 (6) | 0.0034 (5) | 0.0066 (5) | −0.0068 (5) |
O14 | 0.0195 (4) | 0.0211 (4) | 0.0193 (4) | 0.0053 (3) | 0.0051 (3) | −0.0004 (3) |
C15 | 0.0157 (5) | 0.0191 (5) | 0.0174 (5) | −0.0020 (4) | 0.0000 (4) | −0.0015 (4) |
C16 | 0.0217 (6) | 0.0274 (6) | 0.0173 (6) | −0.0020 (5) | 0.0013 (5) | −0.0024 (5) |
C17 | 0.0249 (6) | 0.0326 (7) | 0.0148 (5) | −0.0066 (5) | −0.0036 (5) | 0.0025 (5) |
C18 | 0.0214 (6) | 0.0239 (6) | 0.0206 (6) | −0.0034 (5) | −0.0072 (5) | 0.0030 (5) |
C19 | 0.0169 (5) | 0.0180 (5) | 0.0187 (5) | −0.0025 (4) | −0.0029 (4) | −0.0023 (4) |
C20 | 0.0147 (5) | 0.0153 (5) | 0.0146 (5) | −0.0034 (4) | −0.0014 (4) | −0.0018 (4) |
C21 | 0.0137 (5) | 0.0138 (5) | 0.0142 (5) | −0.0004 (4) | −0.0005 (4) | −0.0015 (4) |
C22 | 0.0145 (5) | 0.0132 (5) | 0.0156 (5) | −0.0009 (4) | 0.0018 (4) | −0.0028 (4) |
C23 | 0.0153 (5) | 0.0187 (5) | 0.0182 (5) | −0.0020 (4) | 0.0027 (4) | −0.0024 (4) |
N24 | 0.0160 (5) | 0.0218 (5) | 0.0167 (5) | −0.0009 (4) | 0.0027 (4) | −0.0018 (4) |
C25 | 0.0184 (5) | 0.0232 (6) | 0.0166 (5) | −0.0019 (5) | 0.0017 (4) | 0.0027 (5) |
C26 | 0.0162 (5) | 0.0152 (5) | 0.0165 (5) | −0.0007 (4) | 0.0006 (4) | 0.0024 (4) |
N27 | 0.0154 (4) | 0.0157 (5) | 0.0141 (4) | −0.0021 (4) | −0.0012 (4) | −0.0002 (3) |
C28 | 0.0143 (5) | 0.0145 (5) | 0.0190 (5) | −0.0026 (4) | 0.0037 (4) | 0.0019 (4) |
O28 | 0.0217 (4) | 0.0150 (4) | 0.0286 (5) | 0.0028 (3) | 0.0010 (4) | −0.0012 (3) |
C29 | 0.0234 (6) | 0.0222 (6) | 0.0215 (6) | 0.0003 (5) | 0.0039 (5) | −0.0020 (5) |
O29 | 0.0422 (6) | 0.0448 (6) | 0.0238 (5) | 0.0150 (5) | −0.0044 (4) | −0.0134 (4) |
C30 | 0.0200 (6) | 0.0283 (7) | 0.0266 (6) | 0.0009 (5) | 0.0044 (5) | −0.0053 (5) |
C1—N27 | 1.4761 (14) | C16—C17 | 1.3936 (19) |
C1—C2 | 1.5118 (16) | C16—H16 | 0.9500 |
C1—C26 | 1.5653 (16) | C17—C18 | 1.3816 (19) |
C1—H1 | 1.0000 | C17—H17 | 0.9500 |
C2—C3 | 1.3888 (17) | C18—C19 | 1.3999 (17) |
C2—C7 | 1.4056 (17) | C18—H18 | 0.9500 |
C3—C4 | 1.3937 (18) | C19—C20 | 1.3923 (16) |
C3—H3 | 0.9500 | C19—H19 | 0.9500 |
C4—C5 | 1.381 (2) | C20—C21 | 1.5151 (15) |
C4—H4 | 0.9500 | C21—N27 | 1.4843 (14) |
C5—C6 | 1.394 (2) | C21—C22 | 1.5725 (16) |
C5—H5 | 0.9500 | C21—H21 | 1.0000 |
C6—C7 | 1.3950 (17) | C22—C28 | 1.5076 (16) |
C6—H6 | 0.9500 | C22—C23 | 1.5497 (15) |
C7—O8 | 1.3646 (15) | C22—H22 | 1.0000 |
O8—C9 | 1.4353 (15) | C23—N24 | 1.4686 (15) |
C9—C10 | 1.498 (2) | C23—H23A | 0.9900 |
C9—H9A | 0.9900 | C23—H23B | 0.9900 |
C9—H9B | 0.9900 | N24—C29 | 1.3674 (16) |
C10—O11 | 1.4199 (16) | N24—C25 | 1.4655 (15) |
C10—H10A | 0.9900 | C25—C26 | 1.5370 (16) |
C10—H10B | 0.9900 | C25—H25A | 0.9900 |
O11—C12 | 1.4220 (16) | C25—H25B | 0.9900 |
C12—C13 | 1.4978 (19) | C26—C28 | 1.5099 (16) |
C12—H12A | 0.9900 | C26—H26 | 1.0000 |
C12—H12B | 0.9900 | N27—H27 | 0.898 (15) |
C13—O14 | 1.4381 (14) | C28—O28 | 1.2159 (14) |
C13—H13A | 0.9900 | C29—O29 | 1.2314 (16) |
C13—H13B | 0.9900 | C29—C30 | 1.5074 (18) |
O14—C15 | 1.3694 (14) | C30—H30A | 0.9800 |
C15—C16 | 1.3930 (16) | C30—H30B | 0.9800 |
C15—C20 | 1.4091 (16) | C30—H30C | 0.9800 |
N27—C1—C2 | 112.01 (9) | C16—C17—H17 | 119.6 |
N27—C1—C26 | 112.44 (9) | C17—C18—C19 | 119.19 (12) |
C2—C1—C26 | 112.88 (9) | C17—C18—H18 | 120.4 |
N27—C1—H1 | 106.3 | C19—C18—H18 | 120.4 |
C2—C1—H1 | 106.3 | C20—C19—C18 | 121.45 (11) |
C26—C1—H1 | 106.3 | C20—C19—H19 | 119.3 |
C3—C2—C7 | 117.89 (11) | C18—C19—H19 | 119.3 |
C3—C2—C1 | 120.13 (11) | C19—C20—C15 | 118.16 (10) |
C7—C2—C1 | 121.96 (10) | C19—C20—C21 | 120.07 (10) |
C2—C3—C4 | 121.72 (13) | C15—C20—C21 | 121.71 (10) |
C2—C3—H3 | 119.1 | N27—C21—C20 | 109.71 (9) |
C4—C3—H3 | 119.1 | N27—C21—C22 | 113.25 (9) |
C5—C4—C3 | 119.53 (13) | C20—C21—C22 | 113.03 (9) |
C5—C4—H4 | 120.2 | N27—C21—H21 | 106.8 |
C3—C4—H4 | 120.2 | C20—C21—H21 | 106.8 |
C4—C5—C6 | 120.32 (12) | C22—C21—H21 | 106.8 |
C4—C5—H5 | 119.8 | C28—C22—C23 | 106.18 (9) |
C6—C5—H5 | 119.8 | C28—C22—C21 | 109.01 (9) |
C5—C6—C7 | 119.60 (13) | C23—C22—C21 | 113.51 (9) |
C5—C6—H6 | 120.2 | C28—C22—H22 | 109.3 |
C7—C6—H6 | 120.2 | C23—C22—H22 | 109.3 |
O8—C7—C6 | 124.40 (12) | C21—C22—H22 | 109.3 |
O8—C7—C2 | 114.73 (10) | N24—C23—C22 | 111.47 (9) |
C6—C7—C2 | 120.87 (12) | N24—C23—H23A | 109.3 |
C7—O8—C9 | 119.20 (10) | C22—C23—H23A | 109.3 |
O8—C9—C10 | 105.64 (10) | N24—C23—H23B | 109.3 |
O8—C9—H9A | 110.6 | C22—C23—H23B | 109.3 |
C10—C9—H9A | 110.6 | H23A—C23—H23B | 108.0 |
O8—C9—H9B | 110.6 | C29—N24—C25 | 118.73 (10) |
C10—C9—H9B | 110.6 | C29—N24—C23 | 125.40 (10) |
H9A—C9—H9B | 108.7 | C25—N24—C23 | 115.69 (9) |
O11—C10—C9 | 107.69 (11) | N24—C25—C26 | 110.66 (9) |
O11—C10—H10A | 110.2 | N24—C25—H25A | 109.5 |
C9—C10—H10A | 110.2 | C26—C25—H25A | 109.5 |
O11—C10—H10B | 110.2 | N24—C25—H25B | 109.5 |
C9—C10—H10B | 110.2 | C26—C25—H25B | 109.5 |
H10A—C10—H10B | 108.5 | H25A—C25—H25B | 108.1 |
C10—O11—C12 | 113.49 (10) | C28—C26—C25 | 105.67 (9) |
O11—C12—C13 | 107.48 (11) | C28—C26—C1 | 110.10 (9) |
O11—C12—H12A | 110.2 | C25—C26—C1 | 109.95 (9) |
C13—C12—H12A | 110.2 | C28—C26—H26 | 110.3 |
O11—C12—H12B | 110.2 | C25—C26—H26 | 110.3 |
C13—C12—H12B | 110.2 | C1—C26—H26 | 110.3 |
H12A—C12—H12B | 108.5 | C1—N27—C21 | 109.71 (9) |
O14—C13—C12 | 107.90 (10) | C1—N27—H27 | 108.2 (9) |
O14—C13—H13A | 110.1 | C21—N27—H27 | 108.8 (9) |
C12—C13—H13A | 110.1 | O28—C28—C22 | 124.66 (11) |
O14—C13—H13B | 110.1 | O28—C28—C26 | 123.82 (11) |
C12—C13—H13B | 110.1 | C22—C28—C26 | 111.26 (9) |
H13A—C13—H13B | 108.4 | O29—C29—N24 | 121.11 (12) |
C15—O14—C13 | 117.69 (9) | O29—C29—C30 | 120.02 (12) |
O14—C15—C16 | 123.92 (11) | N24—C29—C30 | 118.83 (11) |
O14—C15—C20 | 115.27 (10) | C29—C30—H30A | 109.5 |
C16—C15—C20 | 120.81 (11) | C29—C30—H30B | 109.5 |
C15—C16—C17 | 119.46 (12) | H30A—C30—H30B | 109.5 |
C15—C16—H16 | 120.3 | C29—C30—H30C | 109.5 |
C17—C16—H16 | 120.3 | H30A—C30—H30C | 109.5 |
C18—C17—C16 | 120.88 (12) | H30B—C30—H30C | 109.5 |
C18—C17—H17 | 119.6 | ||
N27—C1—C2—C3 | −111.77 (12) | C19—C20—C21—N27 | 110.05 (11) |
C26—C1—C2—C3 | 120.11 (12) | C15—C20—C21—N27 | −67.13 (13) |
N27—C1—C2—C7 | 67.29 (14) | C19—C20—C21—C22 | −122.51 (11) |
C26—C1—C2—C7 | −60.83 (14) | C15—C20—C21—C22 | 60.31 (14) |
C7—C2—C3—C4 | −2.39 (19) | N27—C21—C22—C28 | 5.27 (12) |
C1—C2—C3—C4 | 176.71 (12) | C20—C21—C22—C28 | −120.29 (10) |
C2—C3—C4—C5 | 1.0 (2) | N27—C21—C22—C23 | −112.85 (10) |
C3—C4—C5—C6 | 1.3 (2) | C20—C21—C22—C23 | 121.59 (10) |
C4—C5—C6—C7 | −2.06 (19) | C28—C22—C23—N24 | −53.90 (12) |
C5—C6—C7—O8 | −178.82 (11) | C21—C22—C23—N24 | 65.84 (12) |
C5—C6—C7—C2 | 0.61 (18) | C22—C23—N24—C29 | −133.39 (12) |
C3—C2—C7—O8 | −178.95 (11) | C22—C23—N24—C25 | 51.51 (13) |
C1—C2—C7—O8 | 1.97 (16) | C29—N24—C25—C26 | 131.12 (11) |
C3—C2—C7—C6 | 1.57 (18) | C23—N24—C25—C26 | −53.45 (13) |
C1—C2—C7—C6 | −177.51 (11) | N24—C25—C26—C28 | 57.62 (12) |
C6—C7—O8—C9 | 3.31 (18) | N24—C25—C26—C1 | −61.17 (12) |
C2—C7—O8—C9 | −176.15 (11) | N27—C1—C26—C28 | 6.70 (13) |
C7—O8—C9—C10 | 177.69 (11) | C2—C1—C26—C28 | 134.60 (10) |
O8—C9—C10—O11 | −63.66 (13) | N27—C1—C26—C25 | 122.73 (10) |
C9—C10—O11—C12 | 161.37 (10) | C2—C1—C26—C25 | −109.37 (11) |
C10—O11—C12—C13 | −164.28 (10) | C2—C1—N27—C21 | 172.45 (9) |
O11—C12—C13—O14 | 68.21 (13) | C26—C1—N27—C21 | −59.19 (12) |
C12—C13—O14—C15 | −166.84 (10) | C20—C21—N27—C1 | 179.95 (9) |
C13—O14—C15—C16 | −9.56 (17) | C22—C21—N27—C1 | 52.63 (12) |
C13—O14—C15—C20 | 170.68 (10) | C23—C22—C28—O28 | −110.25 (12) |
O14—C15—C16—C17 | 178.30 (11) | C21—C22—C28—O28 | 127.11 (12) |
C20—C15—C16—C17 | −1.95 (18) | C23—C22—C28—C26 | 64.03 (11) |
C15—C16—C17—C18 | 1.83 (19) | C21—C22—C28—C26 | −58.60 (11) |
C16—C17—C18—C19 | 0.10 (19) | C25—C26—C28—O28 | 108.24 (12) |
C17—C18—C19—C20 | −1.97 (18) | C1—C26—C28—O28 | −133.08 (11) |
C18—C19—C20—C15 | 1.83 (17) | C25—C26—C28—C22 | −66.11 (11) |
C18—C19—C20—C21 | −175.45 (10) | C1—C26—C28—C22 | 52.58 (12) |
O14—C15—C20—C19 | 179.92 (10) | C25—N24—C29—O29 | −8.16 (18) |
C16—C15—C20—C19 | 0.15 (17) | C23—N24—C29—O29 | 176.88 (12) |
O14—C15—C20—C21 | −2.85 (16) | C25—N24—C29—C30 | 169.51 (11) |
C16—C15—C20—C21 | 177.38 (11) | C23—N24—C29—C30 | −5.45 (18) |
D—H···A | D—H | H···A | D···A | D—H···A |
N27—H27···O8 | 0.90 (2) | 2.49 (2) | 3.0337 (13) | 119 (1) |
N27—H27···O14 | 0.90 (2) | 2.44 (1) | 3.0193 (13) | 122 (1) |
C21—H21···O28i | 1.00 | 2.48 | 3.4683 (14) | 168 |
C30—H30B···O28i | 0.98 | 2.51 | 3.0556 (16) | 115 |
Symmetry code: (i) −x+1/2, y−1/2, z. |
Experimental details
Crystal data | |
Chemical formula | C25H28N2O5 |
Mr | 436.49 |
Crystal system, space group | Orthorhombic, Pbca |
Temperature (K) | 100 |
a, b, c (Å) | 17.1756 (6), 11.1724 (4), 22.6546 (8) |
V (Å3) | 4347.3 (3) |
Z | 8 |
Radiation type | Mo Kα |
µ (mm−1) | 0.09 |
Crystal size (mm) | 0.30 × 0.25 × 0.25 |
Data collection | |
Diffractometer | Bruker APEXII CCD |
Absorption correction | Multi-scan (SADABS; Sheldrick, 2003) |
Tmin, Tmax | 0.973, 0.977 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 54466, 6326, 4682 |
Rint | 0.069 |
(sin θ/λ)max (Å−1) | 0.703 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.042, 0.106, 1.00 |
No. of reflections | 6326 |
No. of parameters | 293 |
H-atom treatment | H atoms treated by a mixture of independent and constrained refinement |
Δρmax, Δρmin (e Å−3) | 0.34, −0.24 |
Computer programs: APEX2 (Bruker, 2005), SAINT (Bruker, 2001), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
N27—H27···O8 | 0.90 (2) | 2.49 (2) | 3.0337 (13) | 119 (1) |
N27—H27···O14 | 0.90 (2) | 2.44 (1) | 3.0193 (13) | 122 (1) |
C21—H21···O28i | 1.00 | 2.48 | 3.4683 (14) | 168 |
C30—H30B···O28i | 0.98 | 2.51 | 3.0556 (16) | 115 |
Symmetry code: (i) −x+1/2, y−1/2, z. |
Acknowledgements
We thank the Vietnam National University, Hanoi, (grant No. QG.11.09) for the financial support of this work.
References
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This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
Design, synthesis and applications of macrocyclic ligands for coordination and supramolecular chemistry draw very great attention of investigators during the last several decades (Hiraoka, 1978; Pedersen, 1988; Gokel & Murillo, 1996; Bradshaw & Izatt, 1997). Recently we have developed the effective methods of synthesis of azacrown ethers containing piperidine (Levov et al., 2006, 2008; Anh et al., 2008, 2012a, 2012b), perhydropyrimidine (Hieu et al., 2011), perhydrotriazine (Khieu et al., 2011) and bispidine (Komarova et al., 2008; Sokol et al., 2011) subunits.
In attempts to apply this chemistry for obtaining of a macrocyclic ligand containing N-acylsubstituted bispidine moiety, we studied the Petrenko-Kritchenko condensation of the N-acetylpiperidone with 1,5-bis(2-formylphenoxy)-3-oxapentane and ammonium acetate. The reaction have proceeded smoothly to give the expected azacrown system with a good yield (Fig. 1).
The molecule of the title compound, C25H28 N2O5, comprises a fused pentacyclic system containing the aza-14-crown-3-ether macrocycle, two piperidone and two benzene rings (Fig. 2). The aza-14-crown-3-ether ring adopts a bowl conformation. The configuration of the C7—O8—C9—C10—O11—C12—C13—O14—C15 polyether chain is t–g(-)–t–t–g(+)–t (t = trans, 180°; g = gauche, ±60°). The dihedral angle between the planes of the benzene rings fused to the aza-14-crown-4-ether moiety is 70.18 (4)°. The central piperidone ring has a boat conformation, whereas the terminal piperidone ring adopts a chair conformation. Apparently, the conformation of the central piperidone ring is determined by the two intramolecular N–H···O hydrogen bonds (Table 1). The nitrogen N24 atom has a trigonal-planar geometry (sum of the bond angles is 359.8°), while the nitrogen N27 atom adopts a trigonal-pyramidal geometry (sum of the bond angles is 326.7°).
The molecule of the title compound possesses four asymmetric centers at the C1, C21, C22 and C26 carbon atoms and can have potentially numerous diastereomers. The crystal of the title compound is racemic and consists of enantiomeric pairs with the following relative configuration of the centers: rac-1R*, 21S*,22R*,26S*.
In the crystal, the molecules are bound by the weak intermolecular C–H···O hydrogen bonding interactions into the chains along [010] (Fig. 3, Table 1). The crystal packing of the chains is stacking along the a axis (Fig. 3).