organic compounds
2′-Methyl-2′-nitro-1′-phenyl-2′,3′,5′,6′,7′,7a'-hexahydrospiro[indoline-3,3′-1′H-pyrrolizin]-2-one
aDepartment of Chemistry, University of Mazandaran, 47415 Babolsar, Iran
*Correspondence e-mail: ysarrfi@umz.ac.ir
The title compound, C21H21N3O3, was synthesized by a multi-component 1,3-dipolar cycloaddition of azomethine ylide, derived from isatin and proline by a decarboxylative route, and (E)-1-phenyl-2-nitropropene. In the molecule, the spiro junction links a planar oxindole ring and a pyrrolidine ring in an The molecular packing is stabilized by an intermolecular N—H⋯N interaction of the oxindole and pyrrolizidine rings.
Related literature
For related literature, see: Daly et al. (1986); Grigg & Sridharan (1993); Padwa (1984); Usha, Selvanayagam, Velmurugan, Ravikumar & Poornachandran (2005); Usha, Selvanayagam, Velmurugan, Ravikumar & Raghunathan (2005); Waldmann (1995).
Experimental
Crystal data
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Refinement
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Data collection: SMART (Bruker, 2007); cell SAINT (Bruker, 2007); 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
10.1107/S1600536808020837/om2246sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536808020837/om2246Isup2.hkl
The hydrogen atom of the NH group was found in difference Fourier synthesis. The H(C) atom positions were calculated. H(N) atom was refined in isotropic approximation in riding model, the H(C) atoms were refined in isotropic approximation in riding model with with the Uiso(H) parameters equal to 1.2 Ueq(Ni), 1.2 Ueq(Ci) or 1.5 Ueq(Cii), where U(Ci) and U(Cii) are respectively the equivalent thermal parameters of the (CH or CH2) and CH3 carbon atoms to which the corresponding H atoms are bonded.
Data collection: SMART (Bruker, 2007); cell
SAINT (Bruker, 2007); data reduction: SAINT (Bruker, 2007); 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).C21H21N3O3 | F(000) = 768 |
Mr = 363.41 | Dx = 1.394 Mg m−3 |
Monoclinic, P21/n | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -P 2yn | Cell parameters from 792 reflections |
a = 7.8524 (16) Å | θ = 3–23° |
b = 25.656 (6) Å | µ = 0.10 mm−1 |
c = 9.1767 (19) Å | T = 120 K |
β = 110.489 (4)° | Prism, colorless |
V = 1731.8 (6) Å3 | 0.21 × 0.18 × 0.15 mm |
Z = 4 |
Bruker SMART 1000 CCD area-detector diffractometer | 3773 independent reflections |
Radiation source: fine-focus sealed tube | 2183 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.064 |
ϕ and ω scans | θmax = 27.0°, θmin = 1.6° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −10→10 |
Tmin = 0.980, Tmax = 0.989 | k = −32→32 |
16064 measured reflections | l = −11→11 |
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)] = 0.051 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.103 | H-atom parameters constrained |
S = 1.01 | w = 1/[σ2(Fo2) + (0.01P)2 + 1.6P] where P = (Fo2 + 2Fc2)/3 |
3773 reflections | (Δ/σ)max < 0.001 |
245 parameters | Δρmax = 0.25 e Å−3 |
0 restraints | Δρmin = −0.28 e Å−3 |
C21H21N3O3 | V = 1731.8 (6) Å3 |
Mr = 363.41 | Z = 4 |
Monoclinic, P21/n | Mo Kα radiation |
a = 7.8524 (16) Å | µ = 0.10 mm−1 |
b = 25.656 (6) Å | T = 120 K |
c = 9.1767 (19) Å | 0.21 × 0.18 × 0.15 mm |
β = 110.489 (4)° |
Bruker SMART 1000 CCD area-detector diffractometer | 3773 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 2183 reflections with I > 2σ(I) |
Tmin = 0.980, Tmax = 0.989 | Rint = 0.064 |
16064 measured reflections |
R[F2 > 2σ(F2)] = 0.051 | 0 restraints |
wR(F2) = 0.103 | H-atom parameters constrained |
S = 1.01 | Δρmax = 0.25 e Å−3 |
3773 reflections | Δρmin = −0.28 e Å−3 |
245 parameters |
Experimental. A mixture of isatin (0.147 g, 1 mmol), proline (0.115 g, 1 mmol), and (E)-1-phenyl-2-nitropropene (0.163 g, 1 mmol) in ethanol (10 ml) was stirred at reflux for 1 h. After completion of the reaction, as indicated by TLC, to the solution was added water (25 ml), and the precipitated solid was separated by filtration. The pure cycloadduct was obtained by recrystallization from ethanol. |
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 | ||
N1 | 0.1573 (3) | 0.19274 (7) | 0.7966 (2) | 0.0215 (4) | |
C2 | 0.1056 (3) | 0.17387 (9) | 0.6367 (3) | 0.0210 (5) | |
C3 | 0.2848 (3) | 0.14420 (9) | 0.6478 (3) | 0.0218 (5) | |
C4 | 0.3236 (3) | 0.11281 (9) | 0.8003 (3) | 0.0209 (5) | |
H4A | 0.2295 | 0.0859 | 0.7796 | 0.025* | |
C5 | 0.2810 (3) | 0.15438 (9) | 0.9046 (3) | 0.0212 (5) | |
H5A | 0.3944 | 0.1722 | 0.9645 | 0.025* | |
C6 | 0.1843 (3) | 0.13826 (9) | 1.0155 (3) | 0.0250 (6) | |
H6A | 0.2702 | 0.1284 | 1.1166 | 0.030* | |
H6B | 0.1005 | 0.1097 | 0.9735 | 0.030* | |
C7 | 0.0836 (3) | 0.18844 (9) | 1.0247 (3) | 0.0273 (6) | |
H7A | −0.0140 | 0.1817 | 1.0640 | 0.033* | |
H7B | 0.1657 | 0.2141 | 1.0906 | 0.033* | |
C8 | 0.0098 (3) | 0.20643 (10) | 0.8562 (3) | 0.0250 (6) | |
H8A | −0.1020 | 0.1883 | 0.7986 | 0.030* | |
H8B | −0.0129 | 0.2437 | 0.8495 | 0.030* | |
C9 | 0.4441 (3) | 0.17830 (9) | 0.6496 (3) | 0.0245 (6) | |
H9A | 0.5437 | 0.1566 | 0.6496 | 0.037* | |
H9B | 0.4812 | 0.1996 | 0.7413 | 0.037* | |
H9C | 0.4079 | 0.2002 | 0.5589 | 0.037* | |
C10 | 0.5061 (3) | 0.08576 (9) | 0.8734 (3) | 0.0208 (5) | |
C11 | 0.5235 (3) | 0.03378 (10) | 0.8389 (3) | 0.0285 (6) | |
H11A | 0.4285 | 0.0173 | 0.7622 | 0.034* | |
C12 | 0.6799 (4) | 0.00634 (10) | 0.9170 (3) | 0.0333 (6) | |
H12A | 0.6905 | −0.0282 | 0.8902 | 0.040* | |
C13 | 0.8199 (3) | 0.02934 (10) | 1.0338 (3) | 0.0298 (6) | |
H13A | 0.9226 | 0.0101 | 1.0894 | 0.036* | |
C14 | 0.8070 (3) | 0.08119 (10) | 1.0682 (3) | 0.0280 (6) | |
H14A | 0.9018 | 0.0972 | 1.1465 | 0.034* | |
C15 | 0.6529 (3) | 0.10927 (10) | 0.9861 (3) | 0.0254 (6) | |
H15A | 0.6475 | 0.1446 | 1.0068 | 0.030* | |
N2 | 0.2395 (3) | 0.11023 (8) | 0.5039 (2) | 0.0241 (5) | |
O1 | 0.2495 (2) | 0.06314 (7) | 0.5158 (2) | 0.0346 (4) | |
O2 | 0.1929 (2) | 0.13377 (7) | 0.37859 (19) | 0.0310 (4) | |
N1' | −0.1068 (3) | 0.21391 (8) | 0.4167 (2) | 0.0247 (5) | |
H1' | −0.1647 | 0.2377 | 0.3535 | 0.030* | |
C2' | 0.0582 (3) | 0.22165 (9) | 0.5263 (3) | 0.0245 (5) | |
O2' | 0.1511 (2) | 0.26105 (6) | 0.54370 (19) | 0.0298 (4) | |
C3A | −0.0662 (3) | 0.14082 (9) | 0.5689 (3) | 0.0215 (5) | |
C4' | −0.1202 (3) | 0.09354 (9) | 0.6109 (3) | 0.0248 (6) | |
H4D | −0.0455 | 0.0761 | 0.6989 | 0.030* | |
C5' | −0.2865 (3) | 0.07228 (10) | 0.5209 (3) | 0.0271 (6) | |
H5D | −0.3224 | 0.0403 | 0.5482 | 0.032* | |
C6' | −0.3983 (3) | 0.09824 (10) | 0.3915 (3) | 0.0266 (6) | |
H6D | −0.5086 | 0.0833 | 0.3316 | 0.032* | |
C7' | −0.3494 (3) | 0.14616 (10) | 0.3490 (3) | 0.0252 (6) | |
H7D | −0.4259 | 0.1641 | 0.2628 | 0.030* | |
C7A | −0.1828 (3) | 0.16639 (9) | 0.4391 (3) | 0.0231 (5) |
U11 | U22 | U33 | U12 | U13 | U23 | |
N1 | 0.0226 (11) | 0.0248 (11) | 0.0180 (10) | 0.0022 (9) | 0.0084 (9) | −0.0003 (8) |
C2 | 0.0219 (13) | 0.0213 (13) | 0.0192 (12) | 0.0010 (10) | 0.0066 (10) | −0.0011 (10) |
C3 | 0.0227 (13) | 0.0227 (13) | 0.0187 (12) | −0.0006 (10) | 0.0058 (10) | −0.0016 (10) |
C4 | 0.0227 (13) | 0.0201 (12) | 0.0196 (12) | −0.0022 (10) | 0.0072 (10) | −0.0008 (10) |
C5 | 0.0206 (12) | 0.0239 (13) | 0.0191 (12) | 0.0012 (10) | 0.0069 (10) | −0.0007 (10) |
C6 | 0.0292 (14) | 0.0265 (14) | 0.0219 (13) | 0.0027 (11) | 0.0122 (11) | 0.0021 (11) |
C7 | 0.0309 (14) | 0.0290 (14) | 0.0252 (14) | 0.0025 (11) | 0.0136 (12) | 0.0001 (11) |
C8 | 0.0219 (13) | 0.0284 (14) | 0.0257 (13) | 0.0032 (11) | 0.0098 (11) | −0.0006 (11) |
C9 | 0.0234 (13) | 0.0292 (14) | 0.0227 (13) | −0.0025 (11) | 0.0101 (11) | −0.0005 (11) |
C10 | 0.0244 (13) | 0.0231 (13) | 0.0178 (12) | 0.0008 (10) | 0.0110 (10) | 0.0038 (10) |
C11 | 0.0307 (15) | 0.0270 (14) | 0.0261 (14) | 0.0025 (11) | 0.0078 (12) | −0.0007 (11) |
C12 | 0.0392 (16) | 0.0280 (15) | 0.0337 (15) | 0.0072 (13) | 0.0141 (13) | −0.0019 (12) |
C13 | 0.0281 (14) | 0.0364 (15) | 0.0283 (14) | 0.0096 (12) | 0.0141 (12) | 0.0089 (12) |
C14 | 0.0236 (14) | 0.0354 (15) | 0.0255 (13) | 0.0004 (11) | 0.0093 (11) | 0.0008 (12) |
C15 | 0.0267 (14) | 0.0265 (13) | 0.0253 (13) | 0.0019 (11) | 0.0119 (11) | 0.0012 (11) |
N2 | 0.0232 (11) | 0.0297 (12) | 0.0201 (11) | 0.0006 (9) | 0.0084 (9) | −0.0007 (10) |
O1 | 0.0474 (12) | 0.0247 (10) | 0.0324 (10) | 0.0009 (9) | 0.0149 (9) | −0.0043 (8) |
O2 | 0.0330 (10) | 0.0415 (11) | 0.0188 (9) | 0.0023 (8) | 0.0093 (8) | 0.0017 (8) |
N1' | 0.0249 (11) | 0.0259 (11) | 0.0214 (11) | 0.0018 (9) | 0.0057 (9) | 0.0058 (9) |
C2' | 0.0284 (14) | 0.0247 (13) | 0.0220 (13) | 0.0012 (11) | 0.0107 (11) | −0.0031 (11) |
O2' | 0.0319 (10) | 0.0242 (10) | 0.0318 (10) | −0.0025 (8) | 0.0093 (8) | 0.0024 (8) |
C3A | 0.0217 (13) | 0.0231 (13) | 0.0204 (12) | 0.0022 (10) | 0.0083 (10) | −0.0025 (10) |
C4' | 0.0262 (14) | 0.0244 (13) | 0.0240 (13) | 0.0048 (11) | 0.0090 (11) | 0.0017 (11) |
C5' | 0.0278 (14) | 0.0259 (14) | 0.0298 (14) | −0.0018 (11) | 0.0131 (12) | −0.0023 (11) |
C6' | 0.0205 (13) | 0.0325 (15) | 0.0267 (14) | −0.0033 (11) | 0.0082 (11) | −0.0093 (11) |
C7' | 0.0266 (14) | 0.0293 (14) | 0.0190 (12) | 0.0033 (11) | 0.0071 (11) | −0.0006 (11) |
C7A | 0.0276 (14) | 0.0232 (13) | 0.0200 (13) | 0.0012 (11) | 0.0102 (11) | −0.0019 (10) |
N1—C2 | 1.461 (3) | C10—C11 | 1.388 (3) |
N1—C8 | 1.486 (3) | C11—C12 | 1.379 (3) |
N1—C5 | 1.490 (3) | C11—H11A | 0.9300 |
C2—C3A | 1.530 (3) | C12—C13 | 1.372 (3) |
C2—C2' | 1.550 (3) | C12—H12A | 0.9300 |
C2—C3 | 1.571 (3) | C13—C14 | 1.379 (3) |
C3—N2 | 1.517 (3) | C13—H13A | 0.9300 |
C3—C9 | 1.522 (3) | C14—C15 | 1.383 (3) |
C3—C4 | 1.550 (3) | C14—H14A | 0.9300 |
C4—C10 | 1.521 (3) | C15—H15A | 0.9300 |
C4—C5 | 1.546 (3) | N2—O1 | 1.213 (2) |
C4—H4A | 0.9800 | N2—O2 | 1.235 (2) |
C5—C6 | 1.525 (3) | N1'—C2' | 1.348 (3) |
C5—H5A | 0.9800 | N1'—C7A | 1.404 (3) |
C6—C7 | 1.528 (3) | N1'—H1' | 0.8544 |
C6—H6A | 0.9700 | C2'—O2' | 1.224 (3) |
C6—H6B | 0.9700 | C3A—C4' | 1.383 (3) |
C7—C8 | 1.521 (3) | C3A—C7A | 1.387 (3) |
C7—H7A | 0.9700 | C4'—C5' | 1.389 (3) |
C7—H7B | 0.9700 | C4'—H4D | 0.9300 |
C8—H8A | 0.9700 | C5'—C6' | 1.377 (3) |
C8—H8B | 0.9700 | C5'—H5D | 0.9300 |
C9—H9A | 0.9600 | C6'—C7' | 1.384 (3) |
C9—H9B | 0.9600 | C6'—H6D | 0.9300 |
C9—H9C | 0.9600 | C7'—C7A | 1.381 (3) |
C10—C15 | 1.388 (3) | C7'—H7D | 0.9300 |
C2—N1—C8 | 118.04 (18) | C3—C9—H9C | 109.5 |
C2—N1—C5 | 109.64 (18) | H9A—C9—H9C | 109.5 |
C8—N1—C5 | 108.79 (17) | H9B—C9—H9C | 109.5 |
N1—C2—C3A | 119.15 (19) | C15—C10—C11 | 117.7 (2) |
N1—C2—C2' | 108.24 (18) | C15—C10—C4 | 122.6 (2) |
C3A—C2—C2' | 101.33 (18) | C11—C10—C4 | 119.4 (2) |
N1—C2—C3 | 99.68 (17) | C12—C11—C10 | 120.8 (2) |
C3A—C2—C3 | 113.59 (18) | C12—C11—H11A | 119.6 |
C2'—C2—C3 | 115.5 (2) | C10—C11—H11A | 119.6 |
N2—C3—C9 | 106.34 (19) | C13—C12—C11 | 120.7 (2) |
N2—C3—C4 | 113.56 (19) | C13—C12—H12A | 119.6 |
C9—C3—C4 | 112.82 (19) | C11—C12—H12A | 119.6 |
N2—C3—C2 | 106.86 (17) | C12—C13—C14 | 119.4 (2) |
C9—C3—C2 | 115.85 (19) | C12—C13—H13A | 120.3 |
C4—C3—C2 | 101.46 (18) | C14—C13—H13A | 120.3 |
C10—C4—C5 | 114.60 (18) | C15—C14—C13 | 119.9 (2) |
C10—C4—C3 | 119.50 (19) | C15—C14—H14A | 120.1 |
C5—C4—C3 | 100.59 (18) | C13—C14—H14A | 120.1 |
C10—C4—H4A | 107.1 | C14—C15—C10 | 121.3 (2) |
C5—C4—H4A | 107.1 | C14—C15—H15A | 119.4 |
C3—C4—H4A | 107.1 | C10—C15—H15A | 119.4 |
N1—C5—C6 | 105.17 (18) | O1—N2—O2 | 124.0 (2) |
N1—C5—C4 | 106.01 (17) | O1—N2—C3 | 120.35 (19) |
C6—C5—C4 | 119.5 (2) | O2—N2—C3 | 115.60 (19) |
N1—C5—H5A | 108.6 | C2'—N1'—C7A | 111.4 (2) |
C6—C5—H5A | 108.6 | C2'—N1'—H1' | 123.1 |
C4—C5—H5A | 108.6 | C7A—N1'—H1' | 124.5 |
C5—C6—C7 | 101.31 (19) | O2'—C2'—N1' | 126.3 (2) |
C5—C6—H6A | 111.5 | O2'—C2'—C2 | 124.9 (2) |
C7—C6—H6A | 111.5 | N1'—C2'—C2 | 108.6 (2) |
C5—C6—H6B | 111.5 | C4'—C3A—C7A | 118.7 (2) |
C7—C6—H6B | 111.5 | C4'—C3A—C2 | 133.3 (2) |
H6A—C6—H6B | 109.3 | C7A—C3A—C2 | 108.1 (2) |
C8—C7—C6 | 102.72 (19) | C3A—C4'—C5' | 119.6 (2) |
C8—C7—H7A | 111.2 | C3A—C4'—H4D | 120.2 |
C6—C7—H7A | 111.2 | C5'—C4'—H4D | 120.2 |
C8—C7—H7B | 111.2 | C6'—C5'—C4' | 120.4 (2) |
C6—C7—H7B | 111.2 | C6'—C5'—H5D | 119.8 |
H7A—C7—H7B | 109.1 | C4'—C5'—H5D | 119.8 |
N1—C8—C7 | 103.52 (18) | C5'—C6'—C7' | 121.1 (2) |
N1—C8—H8A | 111.1 | C5'—C6'—H6D | 119.4 |
C7—C8—H8A | 111.1 | C7'—C6'—H6D | 119.4 |
N1—C8—H8B | 111.1 | C7A—C7'—C6' | 117.6 (2) |
C7—C8—H8B | 111.1 | C7A—C7'—H7D | 121.2 |
H8A—C8—H8B | 109.0 | C6'—C7'—H7D | 121.2 |
C3—C9—H9A | 109.5 | C7'—C7A—C3A | 122.6 (2) |
C3—C9—H9B | 109.5 | C7'—C7A—N1' | 126.9 (2) |
H9A—C9—H9B | 109.5 | C3A—C7A—N1' | 110.5 (2) |
C8—N1—C2—C3A | −34.1 (3) | C4—C10—C11—C12 | −172.1 (2) |
C5—N1—C2—C3A | 91.2 (2) | C10—C11—C12—C13 | 1.9 (4) |
C8—N1—C2—C2' | 80.8 (2) | C11—C12—C13—C14 | −3.0 (4) |
C5—N1—C2—C2' | −153.89 (18) | C12—C13—C14—C15 | 0.7 (4) |
C8—N1—C2—C3 | −158.11 (19) | C13—C14—C15—C10 | 2.9 (4) |
C5—N1—C2—C3 | −32.8 (2) | C11—C10—C15—C14 | −3.9 (3) |
N1—C2—C3—N2 | 165.61 (17) | C4—C10—C15—C14 | 169.5 (2) |
C3A—C2—C3—N2 | 37.8 (2) | C9—C3—N2—O1 | 119.1 (2) |
C2'—C2—C3—N2 | −78.7 (2) | C4—C3—N2—O1 | −5.6 (3) |
N1—C2—C3—C9 | −76.1 (2) | C2—C3—N2—O1 | −116.6 (2) |
C3A—C2—C3—C9 | 156.02 (19) | C9—C3—N2—O2 | −61.1 (2) |
C2'—C2—C3—C9 | 39.5 (3) | C4—C3—N2—O2 | 174.21 (19) |
N1—C2—C3—C4 | 46.4 (2) | C2—C3—N2—O2 | 63.2 (2) |
C3A—C2—C3—C4 | −81.4 (2) | C7A—N1'—C2'—O2' | −174.3 (2) |
C2'—C2—C3—C4 | 162.10 (19) | C7A—N1'—C2'—C2 | 1.2 (3) |
N2—C3—C4—C10 | 77.2 (3) | N1—C2—C2'—O2' | 47.5 (3) |
C9—C3—C4—C10 | −43.9 (3) | C3A—C2—C2'—O2' | 173.6 (2) |
C2—C3—C4—C10 | −168.54 (19) | C3—C2—C2'—O2' | −63.2 (3) |
N2—C3—C4—C5 | −156.50 (18) | N1—C2—C2'—N1' | −128.0 (2) |
C9—C3—C4—C5 | 82.4 (2) | C3A—C2—C2'—N1' | −1.9 (2) |
C2—C3—C4—C5 | −42.2 (2) | C3—C2—C2'—N1' | 121.3 (2) |
C2—N1—C5—C6 | −120.7 (2) | N1—C2—C3A—C4' | −59.9 (4) |
C8—N1—C5—C6 | 9.7 (2) | C2'—C2—C3A—C4' | −178.4 (3) |
C2—N1—C5—C4 | 6.8 (2) | C3—C2—C3A—C4' | 57.1 (3) |
C8—N1—C5—C4 | 137.19 (19) | N1—C2—C3A—C7A | 120.6 (2) |
C10—C4—C5—N1 | 152.38 (19) | C2'—C2—C3A—C7A | 2.1 (2) |
C3—C4—C5—N1 | 22.8 (2) | C3—C2—C3A—C7A | −122.5 (2) |
C10—C4—C5—C6 | −89.2 (3) | C7A—C3A—C4'—C5' | 1.6 (3) |
C3—C4—C5—C6 | 141.2 (2) | C2—C3A—C4'—C5' | −177.9 (2) |
N1—C5—C6—C7 | −32.2 (2) | C3A—C4'—C5'—C6' | −0.7 (4) |
C4—C5—C6—C7 | −151.0 (2) | C4'—C5'—C6'—C7' | −0.7 (4) |
C5—C6—C7—C8 | 42.7 (2) | C5'—C6'—C7'—C7A | 1.3 (4) |
C2—N1—C8—C7 | 142.8 (2) | C6'—C7'—C7A—C3A | −0.4 (4) |
C5—N1—C8—C7 | 17.1 (2) | C6'—C7'—C7A—N1' | 179.8 (2) |
C6—C7—C8—N1 | −37.2 (2) | C4'—C3A—C7A—C7' | −1.0 (4) |
C5—C4—C10—C15 | −27.0 (3) | C2—C3A—C7A—C7' | 178.6 (2) |
C3—C4—C10—C15 | 92.4 (3) | C4'—C3A—C7A—N1' | 178.8 (2) |
C5—C4—C10—C11 | 146.3 (2) | C2—C3A—C7A—N1' | −1.5 (3) |
C3—C4—C10—C11 | −94.2 (3) | C2'—N1'—C7A—C7' | −179.9 (2) |
C15—C10—C11—C12 | 1.5 (4) | C2'—N1'—C7A—C3A | 0.2 (3) |
D—H···A | D—H | H···A | D···A | D—H···A |
N1′—H1′···N1i | 0.85 | 2.21 | 2.992 (3) | 151 |
Symmetry code: (i) x−1/2, −y+1/2, z−1/2. |
Experimental details
Crystal data | |
Chemical formula | C21H21N3O3 |
Mr | 363.41 |
Crystal system, space group | Monoclinic, P21/n |
Temperature (K) | 120 |
a, b, c (Å) | 7.8524 (16), 25.656 (6), 9.1767 (19) |
β (°) | 110.489 (4) |
V (Å3) | 1731.8 (6) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 0.10 |
Crystal size (mm) | 0.21 × 0.18 × 0.15 |
Data collection | |
Diffractometer | Bruker SMART 1000 CCD area-detector diffractometer |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.980, 0.989 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 16064, 3773, 2183 |
Rint | 0.064 |
(sin θ/λ)max (Å−1) | 0.639 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.051, 0.103, 1.01 |
No. of reflections | 3773 |
No. of parameters | 245 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.25, −0.28 |
Computer programs: SMART (Bruker, 2007), SAINT (Bruker, 2007), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
N1'—H1'···N1i | 0.85 | 2.21 | 2.992 (3) | 151 |
Symmetry code: (i) x−1/2, −y+1/2, z−1/2. |
Acknowledgements
We are grateful for the financial support of Mazandaran University of the Islamic Republic of Iran.
References
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Multicomponent 1,3-dipolar cycloaddition reactions are considered to be one of the most useful processes for the construction of five-membered heterocyclic ring systems (Padwa, 1984; Grigg & Sridharan, 1993). These strategies offer significant advantages over more traditional approaches, allowing the construction of complex molecular architectures from easily available starting materials in a single synthetic operation without the need for isolation of intermediates. Particularly, the chemistry of the azomethine ylide has gained significance in recent years for the construction of nitrogen containing five-membered heterocycles, which are often the central ring systems of numerous natural products (Daly et al., 1986; Waldmann, 1995). In contrast to similar compounds (Usha, Selvanayagam, Velmurugan, Ravikumar & Poornachandran, 2005; Usha, Selvanayagam, Velmurugan, Ravikumar & Raghunathan, 2005); Waldmann (1995)), in which the carbon atom bearing nitro group is bonded to the pyrrolidine ring, in the title compound it is bonded to the oxindole ring (Fig. 1). In the crystal structure, N—H···H hydrogen bonds link neighboring molecules. Molecules (Fig. 2) are also stacked in a side by side fashion along the c axis through π···π interaction and are further linked by a few intermolecular C—H···π interactions,