organic compounds
(3-Nitrophenyl)methanediyl diacetate
aDepartment of Chemistry, University of Alzahra, Tehran, Iran, and bSchool of Chemistry, University College of Science, University of Tehran, Tehran, Iran
*Correspondence e-mail: aabbasi@khayam.ut.ac.ir
In the title compound, C11H11NO6, only weak van der Waals interactions are found in the molecular packing. The compound is an efficient catalyst for the acetalization of the carbonyl group of in nearly quantative yield.
Related literature
For background literature on silica-based sulfonic acid as catalyst in solvent-free acetalization, see: Karimi et al. (2000); Kumar et al. (2006); Smith & Reddy (2003).
Experimental
Crystal data
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Data collection: IPDS Software (Stoe & Cie, 1997); cell IPDS Software; data reduction: IPDS Software; program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: DIAMOND (Brandenburg, 2001); software used to prepare material for publication: PLATON (Spek, 2003).
Supporting information
https://doi.org/10.1107/S1600536807060990/ng2384sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536807060990/ng2384Isup2.hkl
The catalyst (0.02 gr) was activated under vacuum at 100 °C followed by cooling to room temperature and then 3-nitro-benzaldehyde (3 mmol) was added to the catalyst. The mixture was stirred for two minutes and acetic anhydride (0.6 ml) was then added and stirred for 10 more minutes. The obtained solid was diluted with dichloromethane and filtered to remove the catalyst. The organic layer was washed with saturated NaHCO3 solution and dried with Na2SO4. The solvent was evaporated under reduced pressure to obtain the title compound in yield of 96%. Crystals suitable for crystallography was obtained by crystallization from CH2Cl2.
All H atoms were geometrically positioned and constrained to ride on their parent atoms, with Uiso(H) = 1.2 and 1.5 for Ueq(CH and CH3, respectively).
Protection of
is important in organic chemistry. Many procedures have been done for this aim. In this work, silica based sulfonic acid was used as catalyst in solvent free condition for the acetalization of 3-nitro-benzaldehyde (Karimi, et al., 2000; Kumar, et al., 2006; Smith, & Reddy, 2003). The time of reaction was just 10 minutes at room temperature and the yield of reaction was more than 96%. Therefore, this catalyst was very efficient catalyst for acetalization of the carbonyl group of aldehydes.The moleculare structure of (I) and the atom-numbering scheme are shown in Fig. 1. The nitro (NO2) group is twisted regarding to phenyl ring by torsion angles of O3–N1–C3–C8, 4.8 (3)° and O6–N1–C3–C2, 7.1 (3)°. The methyne carbon are connected to two acetate ions and phenyl ring in a distorted tetrahedral configuration. The structure of the title compound was corroborated by IR and 1H NMR spectroscopies.
For background literature on silica-based sulfonic acid as catalyst in solvent-free acetalization, see: Karimi et al. (2000); Kumar et al. (2006); Smith & Reddy (2003).
Data collection: IPDS Software (Stoe & Cie, 1997); cell
IPDS Software (Stoe & Cie, 1997); data reduction: IPDS Software (Stoe & Cie, 1997); program(s) used to solve structure: SHELXS97 (Sheldrick, 1997); program(s) used to refine structure: SHELXL97 (Sheldrick, 1997); molecular graphics: DIAMOND (Brandenburg, 2001); software used to prepare material for publication: PLATON (Spek, 2003).Fig. 1. Molecular structure of (I), with 50% probability displacement ellipsoids. H atoms are shown as circles of arbitrary radii. |
C11H11NO6 | Z = 2 |
Mr = 253.21 | F(000) = 264 |
Triclinic, P1 | Dx = 1.412 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 7.8959 (9) Å | Cell parameters from 1543 reflections |
b = 8.4779 (10) Å | θ = 3.5–25.5° |
c = 9.7788 (13) Å | µ = 0.12 mm−1 |
α = 109.094 (11)° | T = 290 K |
β = 98.031 (10)° | Block shape, colorless |
γ = 99.963 (10)° | 0.3 × 0.2 × 0.2 mm |
V = 595.55 (13) Å3 |
STOE IPDS diffractometer | 1224 reflections with I > 2σ(I) |
Radiation source: fine-focus sealed tube | Rint = 0.024 |
Graphite monochromator | θmax = 25.5°, θmin = 3.8° |
Area detector – phi oscillation scans | h = −9→8 |
3869 measured reflections | k = −7→10 |
2149 independent reflections | l = −11→11 |
Refinement on F2 | Secondary atom site location: difference Fourier map |
Least-squares matrix: full | Hydrogen site location: inferred from neighbouring sites |
R[F2 > 2σ(F2)] = 0.036 | H-atom parameters constrained |
wR(F2) = 0.098 | w = 1/[σ2(Fo2) + (0.0565P)2] where P = (Fo2 + 2Fc2)/3 |
S = 0.91 | (Δ/σ)max < 0.001 |
2149 reflections | Δρmax = 0.19 e Å−3 |
166 parameters | Δρmin = −0.14 e Å−3 |
0 restraints | Extinction correction: SHELXL, Fc*=kFc[1+0.001xFc2λ3/sin(2θ)]-1/4 |
Primary atom site location: structure-invariant direct methods | Extinction coefficient: 0.100 (9) |
C11H11NO6 | γ = 99.963 (10)° |
Mr = 253.21 | V = 595.55 (13) Å3 |
Triclinic, P1 | Z = 2 |
a = 7.8959 (9) Å | Mo Kα radiation |
b = 8.4779 (10) Å | µ = 0.12 mm−1 |
c = 9.7788 (13) Å | T = 290 K |
α = 109.094 (11)° | 0.3 × 0.2 × 0.2 mm |
β = 98.031 (10)° |
STOE IPDS diffractometer | 1224 reflections with I > 2σ(I) |
3869 measured reflections | Rint = 0.024 |
2149 independent reflections |
R[F2 > 2σ(F2)] = 0.036 | 0 restraints |
wR(F2) = 0.098 | H-atom parameters constrained |
S = 0.91 | Δρmax = 0.19 e Å−3 |
2149 reflections | Δρmin = −0.14 e Å−3 |
166 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 | ||
O1 | 0.30507 (14) | 0.16974 (14) | −0.04836 (12) | 0.0445 (3) | |
O2 | 0.59909 (14) | 0.22011 (14) | 0.05498 (12) | 0.0457 (4) | |
O3 | 0.16732 (19) | 0.6263 (2) | 0.60185 (17) | 0.0836 (5) | |
O4 | 0.43191 (18) | 0.23344 (17) | −0.22188 (14) | 0.0668 (4) | |
O5 | 0.75926 (17) | 0.47383 (18) | 0.07041 (18) | 0.0791 (5) | |
O6 | 0.1787 (2) | 0.7027 (2) | 0.4140 (2) | 0.1013 (6) | |
N1 | 0.2009 (2) | 0.6066 (2) | 0.4801 (2) | 0.0651 (5) | |
C1 | 0.4464 (2) | 0.2888 (2) | 0.06532 (17) | 0.0404 (4) | |
H1 | 0.4676 | 0.4004 | 0.0533 | 0.048* | |
C2 | 0.3243 (2) | 0.4433 (2) | 0.27690 (19) | 0.0440 (5) | |
H2 | 0.3153 | 0.5260 | 0.2347 | 0.053* | |
C3 | 0.2703 (2) | 0.4571 (2) | 0.40713 (19) | 0.0479 (5) | |
C4 | 0.3077 (3) | 0.1635 (2) | −0.1894 (2) | 0.0485 (5) | |
C5 | 0.3922 (2) | 0.3050 (2) | 0.20946 (17) | 0.0394 (4) | |
C6 | 0.4043 (2) | 0.1838 (2) | 0.2739 (2) | 0.0501 (5) | |
H6 | 0.4494 | 0.0901 | 0.2287 | 0.060* | |
C7 | 0.7489 (2) | 0.3270 (3) | 0.0531 (2) | 0.0500 (5) | |
C8 | 0.2821 (2) | 0.3387 (3) | 0.4739 (2) | 0.0580 (5) | |
H8 | 0.2456 | 0.3512 | 0.5625 | 0.070* | |
C9 | 0.3497 (2) | 0.2009 (3) | 0.4059 (2) | 0.0595 (5) | |
H9 | 0.3587 | 0.1188 | 0.4487 | 0.071* | |
C10 | 0.1372 (3) | 0.0604 (3) | −0.2909 (2) | 0.0687 (6) | |
H10A | 0.1573 | 0.0030 | −0.3875 | 0.103* | |
H10B | 0.0600 | 0.1348 | −0.2973 | 0.103* | |
H10C | 0.0842 | −0.0233 | −0.2535 | 0.103* | |
C11 | 0.8926 (2) | 0.2351 (3) | 0.0284 (3) | 0.0726 (7) | |
H11A | 0.9436 | 0.2246 | 0.1192 | 0.109* | |
H11B | 0.9812 | 0.2985 | −0.0039 | 0.109* | |
H11C | 0.8457 | 0.1228 | −0.0459 | 0.109* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0425 (7) | 0.0528 (8) | 0.0365 (7) | 0.0072 (6) | 0.0073 (6) | 0.0162 (6) |
O2 | 0.0396 (7) | 0.0477 (7) | 0.0545 (8) | 0.0125 (6) | 0.0163 (6) | 0.0208 (6) |
O3 | 0.0737 (11) | 0.1055 (12) | 0.0530 (9) | 0.0200 (9) | 0.0252 (8) | 0.0001 (9) |
O4 | 0.0720 (10) | 0.0778 (10) | 0.0515 (8) | 0.0062 (8) | 0.0219 (8) | 0.0267 (8) |
O5 | 0.0537 (9) | 0.0547 (9) | 0.1318 (14) | 0.0070 (7) | 0.0210 (9) | 0.0398 (9) |
O6 | 0.1370 (17) | 0.0995 (14) | 0.0925 (13) | 0.0722 (13) | 0.0492 (12) | 0.0343 (12) |
N1 | 0.0562 (11) | 0.0744 (13) | 0.0545 (12) | 0.0175 (9) | 0.0168 (9) | 0.0068 (10) |
C1 | 0.0376 (10) | 0.0417 (10) | 0.0424 (10) | 0.0089 (8) | 0.0088 (8) | 0.0159 (8) |
C2 | 0.0395 (10) | 0.0474 (11) | 0.0420 (11) | 0.0066 (8) | 0.0068 (8) | 0.0147 (9) |
C3 | 0.0360 (10) | 0.0582 (12) | 0.0415 (11) | 0.0068 (9) | 0.0086 (8) | 0.0097 (9) |
C4 | 0.0571 (13) | 0.0512 (11) | 0.0413 (12) | 0.0190 (10) | 0.0143 (10) | 0.0172 (9) |
C5 | 0.0327 (10) | 0.0457 (10) | 0.0362 (10) | 0.0047 (8) | 0.0040 (8) | 0.0136 (8) |
C6 | 0.0487 (11) | 0.0535 (11) | 0.0526 (12) | 0.0128 (9) | 0.0126 (9) | 0.0238 (9) |
C7 | 0.0397 (11) | 0.0588 (13) | 0.0508 (12) | 0.0049 (10) | 0.0111 (9) | 0.0214 (10) |
C8 | 0.0499 (12) | 0.0771 (14) | 0.0444 (11) | 0.0082 (11) | 0.0127 (10) | 0.0206 (11) |
C9 | 0.0589 (13) | 0.0731 (14) | 0.0570 (12) | 0.0124 (11) | 0.0149 (11) | 0.0375 (11) |
C10 | 0.0693 (15) | 0.0789 (15) | 0.0459 (12) | 0.0100 (12) | 0.0025 (11) | 0.0145 (11) |
C11 | 0.0469 (13) | 0.0767 (15) | 0.0971 (18) | 0.0168 (11) | 0.0275 (12) | 0.0290 (13) |
O1—C4 | 1.366 (2) | C4—C10 | 1.488 (3) |
O1—C1 | 1.4249 (19) | C5—C6 | 1.380 (2) |
O2—C7 | 1.367 (2) | C6—C9 | 1.388 (2) |
O2—C1 | 1.4287 (18) | C6—H6 | 0.9300 |
O3—N1 | 1.221 (2) | C7—C11 | 1.487 (2) |
O4—C4 | 1.193 (2) | C8—C9 | 1.378 (2) |
O5—C7 | 1.187 (2) | C8—H8 | 0.9300 |
O6—N1 | 1.215 (2) | C9—H9 | 0.9300 |
N1—C3 | 1.474 (2) | C10—H10A | 0.9600 |
C1—C5 | 1.500 (2) | C10—H10B | 0.9600 |
C1—H1 | 0.9800 | C10—H10C | 0.9600 |
C2—C3 | 1.374 (2) | C11—H11A | 0.9600 |
C2—C5 | 1.381 (2) | C11—H11B | 0.9600 |
C2—H2 | 0.9300 | C11—H11C | 0.9600 |
C3—C8 | 1.374 (3) | ||
C4—O1—C1 | 116.57 (13) | C5—C6—H6 | 119.8 |
C7—O2—C1 | 116.69 (13) | C9—C6—H6 | 119.8 |
O6—N1—O3 | 123.62 (18) | O5—C7—O2 | 122.99 (17) |
O6—N1—C3 | 117.60 (17) | O5—C7—C11 | 125.89 (18) |
O3—N1—C3 | 118.8 (2) | O2—C7—C11 | 111.12 (17) |
O1—C1—O2 | 107.75 (12) | C3—C8—C9 | 118.09 (17) |
O1—C1—C5 | 106.49 (12) | C3—C8—H8 | 121.0 |
O2—C1—C5 | 111.36 (13) | C9—C8—H8 | 121.0 |
O1—C1—H1 | 110.4 | C8—C9—C6 | 120.49 (18) |
O2—C1—H1 | 110.4 | C8—C9—H9 | 119.8 |
C5—C1—H1 | 110.4 | C6—C9—H9 | 119.8 |
C3—C2—C5 | 119.16 (16) | C4—C10—H10A | 109.5 |
C3—C2—H2 | 120.4 | C4—C10—H10B | 109.5 |
C5—C2—H2 | 120.4 | H10A—C10—H10B | 109.5 |
C8—C3—C2 | 122.43 (17) | C4—C10—H10C | 109.5 |
C8—C3—N1 | 118.60 (18) | H10A—C10—H10C | 109.5 |
C2—C3—N1 | 118.95 (18) | H10B—C10—H10C | 109.5 |
O4—C4—O1 | 122.89 (18) | C7—C11—H11A | 109.5 |
O4—C4—C10 | 126.65 (18) | C7—C11—H11B | 109.5 |
O1—C4—C10 | 110.46 (16) | H11A—C11—H11B | 109.5 |
C6—C5—C2 | 119.45 (16) | C7—C11—H11C | 109.5 |
C6—C5—C1 | 121.85 (15) | H11A—C11—H11C | 109.5 |
C2—C5—C1 | 118.68 (15) | H11B—C11—H11C | 109.5 |
C5—C6—C9 | 120.38 (18) | ||
C4—O1—C1—O2 | −74.57 (15) | C3—C2—C5—C1 | 178.43 (15) |
C4—O1—C1—C5 | 165.86 (13) | O1—C1—C5—C6 | 79.55 (18) |
C7—O2—C1—O1 | 129.88 (14) | O2—C1—C5—C6 | −37.7 (2) |
C7—O2—C1—C5 | −113.68 (15) | O1—C1—C5—C2 | −98.83 (16) |
C5—C2—C3—C8 | 0.4 (3) | O2—C1—C5—C2 | 143.97 (14) |
C5—C2—C3—N1 | 178.90 (15) | C2—C5—C6—C9 | −0.3 (2) |
O6—N1—C3—C8 | −174.42 (18) | C1—C5—C6—C9 | −178.70 (16) |
O3—N1—C3—C8 | 4.8 (3) | C1—O2—C7—O5 | 5.7 (3) |
O6—N1—C3—C2 | 7.1 (3) | C1—O2—C7—C11 | −174.89 (14) |
O3—N1—C3—C2 | −173.74 (16) | C2—C3—C8—C9 | −0.5 (3) |
C1—O1—C4—O4 | 10.7 (2) | N1—C3—C8—C9 | −179.01 (15) |
C1—O1—C4—C10 | −169.00 (14) | C3—C8—C9—C6 | 0.2 (3) |
C3—C2—C5—C6 | 0.0 (2) | C5—C6—C9—C8 | 0.2 (3) |
Experimental details
Crystal data | |
Chemical formula | C11H11NO6 |
Mr | 253.21 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 290 |
a, b, c (Å) | 7.8959 (9), 8.4779 (10), 9.7788 (13) |
α, β, γ (°) | 109.094 (11), 98.031 (10), 99.963 (10) |
V (Å3) | 595.55 (13) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.12 |
Crystal size (mm) | 0.3 × 0.2 × 0.2 |
Data collection | |
Diffractometer | STOE IPDS |
Absorption correction | – |
No. of measured, independent and observed [I > 2σ(I)] reflections | 3869, 2149, 1224 |
Rint | 0.024 |
(sin θ/λ)max (Å−1) | 0.606 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.036, 0.098, 0.91 |
No. of reflections | 2149 |
No. of parameters | 166 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.19, −0.14 |
Computer programs: IPDS Software (Stoe & Cie, 1997), SHELXS97 (Sheldrick, 1997), SHELXL97 (Sheldrick, 1997), DIAMOND (Brandenburg, 2001), PLATON (Spek, 2003).
O1—C4 | 1.366 (2) | O4—C4 | 1.193 (2) |
O1—C1 | 1.4249 (19) | O5—C7 | 1.187 (2) |
O2—C7 | 1.367 (2) | O6—N1 | 1.215 (2) |
O2—C1 | 1.4287 (18) | N1—C3 | 1.474 (2) |
O3—N1 | 1.221 (2) |
Acknowledgements
This work was supported by a grant from the University of Tehran and the University of Alzahra.
References
Brandenburg, K. (2001). DIAMOND. Version 2.1e. Crystal Impact GbR, Bonn, Germany. Google Scholar
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Protection of aldehydes is important in organic chemistry. Many procedures have been done for this aim. In this work, silica based sulfonic acid was used as catalyst in solvent free condition for the acetalization of 3-nitro-benzaldehyde (Karimi, et al., 2000; Kumar, et al., 2006; Smith, & Reddy, 2003). The time of reaction was just 10 minutes at room temperature and the yield of reaction was more than 96%. Therefore, this catalyst was very efficient catalyst for acetalization of the carbonyl group of aldehydes.
The moleculare structure of (I) and the atom-numbering scheme are shown in Fig. 1. The nitro (NO2) group is twisted regarding to phenyl ring by torsion angles of O3–N1–C3–C8, 4.8 (3)° and O6–N1–C3–C2, 7.1 (3)°. The methyne carbon are connected to two acetate ions and phenyl ring in a distorted tetrahedral configuration. The structure of the title compound was corroborated by IR and 1H NMR spectroscopies.