organic compounds
Methyl 1-allyl-4-hydroxy-2,2-dioxo-1H-2λ6,1-benzothiazine-3-carboxylate
aSTC "Institute for Single Crystals", National Academy of Sciences of Ukraine, 60 Lenina ave., Kharkiv 61001, Ukraine, and bNational University of Pharmacy, 4 Blyukhera St, Kharkiv 61168, Ukraine
*Correspondence e-mail: sveta@xray.isc.kharkov.com
There are two independent molecules in the 13H13NO5S, in both of which the ester substituent is nearly coplanar [C—C—C—O torsion angles = 2.7 (7) and −0.8 (7)°] with the planar fragment of the bicycle due to the formation of a strong O—H⋯O intramolecular hydrogen bond. The vinyl group at the ring N atom is approximately orthogonal to the heterocyclic mean plane [C—N—C—C torsion angles = 103.1 (6) and 98.2 (5)°]. The was performed on a two-component, non-merohedrally twinned crystal [population ratio = 0.483 (3):0.517 (3).
of the title compound, CCCDC reference: 966958
Related literature
For general properties of oxicams, see: Kleemann et al. (2008). For H⋯O contacts, see: Zefirov (1997) and for C—N bond lengths, see: Bürgi & Dunitz (1994).
Experimental
Crystal data
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Data collection: CrysAlis CCD (Agilent, 2011); cell CrysAlis CCD; data reduction: CrysAlis RED (Agilent, 2011); program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL; molecular graphics: XP in SHELXTL; software used to prepare material for publication: SHELXTL.
Supporting information
CCDC reference: 966958
10.1107/S1600536813028572/bg2518sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536813028572/bg2518Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536813028572/bg2518Isup3.cml
Triethylamine (1.54 ml, 11 mmol) was added to the solution of methyl N-allylanthranilate (1.91 g, 10 mmol) in CH2Cl2 (20 ml). Chlorosulfonyl acetic acid ethyl ester (2.05 g, 11 mol) was then added dropwise with cooling and stirring and left at the room temperature for 5 h. The reaction mixture was diluted with a cold water and vigorously stirred. The organic layer was separated, dried over CaCl2, and the solvent was distilled off (finally under reduced pressure). The residue was treated with the solution of sodium methylate (prepared from metallic sodium (0.69 g, 30 mmol) and absolute MeOH (15 ml)), taken fo reflux, and then left for 10–12 h at the room temperature. The reaction mixture was diluted with cold water and acidified with 1 N HCl to pH 3. The precipitate was filtered, washed with water, and dried. Yield 2.39 g (81%). M.p. 114–116%A C (MeOH).
The
was performed on a two-component, non-merohedral twinned crystal (Refined populations: 0.483 (3),0.517 (3) ). All hydrogen atoms were located from electron density difference maps and were refined in the riding motion approximation with Uiso constrained to be 1.5 times Ueq of the for the methyl and hydroxyl groups and 1.2 times Ueq of the for the other atoms.Data collection: CrysAlis CCD (Agilent, 2011); cell
CrysAlis CCD (Agilent, 2011); data reduction: CrysAlis RED (Agilent, 2011); program(s) used to solve structure: SHELXTL (Sheldrick, 2008); program(s) used to refine structure: SHELXTL (Sheldrick, 2008); molecular graphics: XP in SHELXTL (Sheldrick, 2008); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).Fig. 1. View of the title compound with atomic membering. All atoms are shown with displacement ellipsoids drawn at the 50% probability level. |
C13H13NO5S | F(000) = 1232 |
Mr = 295.30 | Dx = 1.495 Mg m−3 |
Monoclinic, P21/c | Mo Kα radiation, λ = 0.71073 Å |
a = 17.8654 (12) Å | Cell parameters from 4369 reflections |
b = 6.9444 (5) Å | θ = 2.9–32.0° |
c = 21.1462 (16) Å | µ = 0.27 mm−1 |
β = 90.122 (7)° | T = 293 K |
V = 2623.5 (3) Å3 | Stick, colourless |
Z = 8 | 0.30 × 0.10 × 0.10 mm |
Agilent Xcalibur3 diffractometer | 4647 independent reflections |
Radiation source: Enhance (Mo) X-ray Source | 3728 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.000 |
Detector resolution: 16.1827 pixels mm-1 | θmax = 25.0°, θmin = 3.0° |
ω scans | h = −19→21 |
Absorption correction: multi-scan (CrysAlis RED; Agilent, 2011) | k = −8→8 |
Tmin = 0.925, Tmax = 0.974 | l = −25→25 |
4647 measured reflections |
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)] = 0.069 | Hydrogen site location: difference Fourier map |
wR(F2) = 0.218 | H-atom parameters constrained |
S = 1.15 | w = 1/[σ2(Fo2) + (0.1383P)2 + 0.312P] where P = (Fo2 + 2Fc2)/3 |
4647 reflections | (Δ/σ)max = 0.001 |
366 parameters | Δρmax = 0.41 e Å−3 |
0 restraints | Δρmin = −0.40 e Å−3 |
C13H13NO5S | V = 2623.5 (3) Å3 |
Mr = 295.30 | Z = 8 |
Monoclinic, P21/c | Mo Kα radiation |
a = 17.8654 (12) Å | µ = 0.27 mm−1 |
b = 6.9444 (5) Å | T = 293 K |
c = 21.1462 (16) Å | 0.30 × 0.10 × 0.10 mm |
β = 90.122 (7)° |
Agilent Xcalibur3 diffractometer | 4647 independent reflections |
Absorption correction: multi-scan (CrysAlis RED; Agilent, 2011) | 3728 reflections with I > 2σ(I) |
Tmin = 0.925, Tmax = 0.974 | Rint = 0.000 |
4647 measured reflections |
R[F2 > 2σ(F2)] = 0.069 | 0 restraints |
wR(F2) = 0.218 | H-atom parameters constrained |
S = 1.15 | Δρmax = 0.41 e Å−3 |
4647 reflections | Δρmin = −0.40 e Å−3 |
366 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 | ||
S1A | 0.14036 (9) | 0.3858 (2) | 0.17531 (7) | 0.0470 (4) | |
N1A | 0.1098 (3) | 0.2473 (7) | 0.1181 (3) | 0.0444 (12) | |
O1A | −0.0661 (3) | 0.3675 (8) | 0.2396 (3) | 0.0712 (15) | |
H1OA | −0.0543 | 0.3505 | 0.2766 | 0.107* | |
O2A | 0.0229 (3) | 0.3701 (8) | 0.3341 (2) | 0.0733 (14) | |
O3A | 0.1452 (3) | 0.3964 (7) | 0.3154 (2) | 0.0612 (12) | |
O4A | 0.1432 (3) | 0.5799 (7) | 0.1529 (2) | 0.0626 (12) | |
O5A | 0.2044 (3) | 0.2977 (9) | 0.1996 (2) | 0.0737 (15) | |
C1A | 0.0368 (3) | 0.2867 (8) | 0.0946 (3) | 0.0446 (14) | |
C2A | 0.0214 (4) | 0.2520 (9) | 0.0319 (3) | 0.0545 (17) | |
H2A | 0.0580 | 0.2029 | 0.0051 | 0.065* | |
C3A | −0.0493 (4) | 0.2915 (11) | 0.0099 (4) | 0.068 (2) | |
H3A | −0.0600 | 0.2716 | −0.0326 | 0.081* | |
C4A | −0.1044 (4) | 0.3594 (10) | 0.0488 (5) | 0.072 (2) | |
H4A | −0.1515 | 0.3874 | 0.0323 | 0.087* | |
C5A | −0.0903 (4) | 0.3864 (9) | 0.1120 (4) | 0.0579 (18) | |
H5A | −0.1282 | 0.4285 | 0.1387 | 0.070* | |
C6A | −0.0196 (4) | 0.3509 (8) | 0.1358 (3) | 0.0455 (14) | |
C7A | −0.0051 (4) | 0.3652 (8) | 0.2037 (3) | 0.0445 (15) | |
C8A | 0.0646 (4) | 0.3710 (8) | 0.2297 (3) | 0.0464 (15) | |
C9A | 0.0758 (5) | 0.3764 (9) | 0.2972 (3) | 0.0534 (17) | |
C10A | 0.1605 (5) | 0.3986 (11) | 0.3825 (3) | 0.072 (2) | |
H10A | 0.2111 | 0.4399 | 0.3896 | 0.108* | |
H10B | 0.1538 | 0.2715 | 0.3994 | 0.108* | |
H10C | 0.1267 | 0.4859 | 0.4030 | 0.108* | |
C11A | 0.1484 (5) | 0.0682 (10) | 0.1012 (3) | 0.0633 (18) | |
H11A | 0.1116 | −0.0235 | 0.0861 | 0.076* | |
H11B | 0.1709 | 0.0147 | 0.1392 | 0.076* | |
C12A | 0.2079 (5) | 0.0896 (18) | 0.0522 (4) | 0.089 (3) | |
H12A | 0.2286 | −0.0229 | 0.0360 | 0.106* | |
C13A | 0.2336 (5) | 0.255 (2) | 0.0298 (4) | 0.107 (4) | |
H13A | 0.2144 | 0.3708 | 0.0446 | 0.128* | |
H13B | 0.2709 | 0.2549 | −0.0009 | 0.128* | |
S1B | 0.36187 (9) | 0.7281 (2) | 0.43097 (7) | 0.0483 (4) | |
N1B | 0.3887 (3) | 0.8759 (7) | 0.3742 (2) | 0.0462 (13) | |
O1B | 0.5691 (2) | 0.7495 (7) | 0.4896 (2) | 0.0588 (13) | |
H1OB | 0.5583 | 0.7425 | 0.5272 | 0.088* | |
O2B | 0.4815 (3) | 0.7162 (7) | 0.5863 (2) | 0.0655 (13) | |
O3B | 0.3585 (3) | 0.7152 (7) | 0.5704 (2) | 0.0617 (12) | |
O4B | 0.3600 (3) | 0.5376 (6) | 0.4066 (2) | 0.0643 (13) | |
O5B | 0.2942 (3) | 0.8056 (8) | 0.4570 (2) | 0.0695 (14) | |
C1B | 0.4624 (3) | 0.8560 (8) | 0.3489 (3) | 0.0409 (14) | |
C2B | 0.4758 (4) | 0.9081 (9) | 0.2867 (3) | 0.0539 (17) | |
H2B | 0.4370 | 0.9524 | 0.2613 | 0.065* | |
C3B | 0.5496 (4) | 0.8934 (9) | 0.2621 (4) | 0.0562 (17) | |
H3B | 0.5592 | 0.9245 | 0.2201 | 0.067* | |
C4B | 0.6055 (4) | 0.8337 (9) | 0.3004 (4) | 0.0557 (17) | |
H4B | 0.6539 | 0.8252 | 0.2844 | 0.067* | |
C5B | 0.5925 (4) | 0.7856 (9) | 0.3619 (4) | 0.0539 (17) | |
H5B | 0.6322 | 0.7447 | 0.3870 | 0.065* | |
C6B | 0.5194 (3) | 0.7966 (7) | 0.3885 (3) | 0.0417 (13) | |
C7B | 0.5071 (4) | 0.7615 (8) | 0.4556 (3) | 0.0469 (15) | |
C8B | 0.4367 (4) | 0.7462 (8) | 0.4823 (3) | 0.0465 (15) | |
C9B | 0.4276 (4) | 0.7230 (8) | 0.5511 (3) | 0.0496 (16) | |
C10B | 0.3435 (5) | 0.7079 (11) | 0.6370 (3) | 0.068 (2) | |
H10D | 0.3152 | 0.8194 | 0.6491 | 0.102* | |
H10E | 0.3899 | 0.7054 | 0.6599 | 0.102* | |
H10F | 0.3153 | 0.5938 | 0.6464 | 0.102* | |
C11B | 0.3386 (4) | 1.0290 (10) | 0.3539 (3) | 0.0561 (17) | |
H11C | 0.3688 | 1.1344 | 0.3381 | 0.067* | |
H11D | 0.3120 | 1.0760 | 0.3908 | 0.067* | |
C12B | 0.2831 (4) | 0.9795 (16) | 0.3054 (4) | 0.077 (3) | |
H12B | 0.2564 | 1.0801 | 0.2872 | 0.093* | |
C13B | 0.2678 (5) | 0.799 (2) | 0.2850 (4) | 0.096 (3) | |
H13C | 0.2934 | 0.6944 | 0.3021 | 0.116* | |
H13D | 0.2317 | 0.7794 | 0.2539 | 0.116* |
U11 | U22 | U33 | U12 | U13 | U23 | |
S1A | 0.0278 (7) | 0.0627 (9) | 0.0505 (7) | −0.0049 (7) | −0.0033 (8) | −0.0054 (7) |
N1A | 0.030 (2) | 0.048 (3) | 0.055 (3) | 0.002 (2) | −0.001 (2) | −0.005 (2) |
O1A | 0.049 (3) | 0.080 (4) | 0.084 (3) | 0.004 (2) | 0.012 (3) | 0.003 (3) |
O2A | 0.077 (4) | 0.084 (4) | 0.059 (3) | −0.007 (3) | 0.018 (3) | −0.011 (2) |
O3A | 0.064 (3) | 0.072 (3) | 0.048 (2) | −0.007 (3) | −0.001 (3) | −0.005 (2) |
O4A | 0.057 (3) | 0.062 (3) | 0.068 (3) | −0.026 (2) | 0.004 (3) | −0.004 (2) |
O5A | 0.035 (3) | 0.123 (5) | 0.063 (3) | 0.007 (3) | −0.012 (2) | −0.011 (3) |
C1A | 0.037 (3) | 0.038 (3) | 0.059 (4) | −0.002 (3) | −0.009 (3) | 0.003 (3) |
C2A | 0.048 (4) | 0.052 (3) | 0.063 (4) | −0.010 (3) | −0.021 (3) | 0.001 (3) |
C3A | 0.064 (5) | 0.059 (4) | 0.080 (5) | −0.026 (4) | −0.029 (5) | 0.013 (4) |
C4A | 0.046 (4) | 0.064 (4) | 0.107 (7) | −0.015 (4) | −0.036 (5) | 0.029 (4) |
C5A | 0.034 (3) | 0.045 (3) | 0.094 (5) | 0.005 (3) | −0.009 (4) | 0.010 (3) |
C6A | 0.039 (3) | 0.031 (3) | 0.066 (4) | −0.008 (3) | −0.005 (3) | 0.007 (3) |
C7A | 0.033 (3) | 0.040 (3) | 0.060 (4) | 0.002 (2) | 0.013 (3) | 0.000 (3) |
C8A | 0.042 (4) | 0.042 (3) | 0.055 (3) | −0.003 (3) | 0.009 (3) | −0.006 (3) |
C9A | 0.072 (5) | 0.040 (3) | 0.048 (3) | −0.003 (3) | 0.011 (4) | −0.002 (3) |
C10A | 0.107 (7) | 0.056 (4) | 0.053 (4) | −0.004 (4) | −0.015 (4) | −0.009 (3) |
C11A | 0.065 (5) | 0.054 (4) | 0.071 (4) | 0.011 (4) | −0.009 (4) | −0.011 (3) |
C12A | 0.056 (5) | 0.149 (9) | 0.061 (5) | 0.057 (6) | −0.011 (4) | −0.035 (5) |
C13A | 0.043 (5) | 0.218 (13) | 0.058 (5) | −0.023 (7) | −0.007 (4) | 0.019 (7) |
S1B | 0.0336 (8) | 0.0578 (9) | 0.0535 (8) | −0.0016 (8) | −0.0105 (8) | 0.0126 (7) |
N1B | 0.036 (3) | 0.049 (3) | 0.053 (3) | 0.006 (2) | 0.000 (2) | 0.012 (2) |
O1B | 0.032 (2) | 0.074 (3) | 0.071 (3) | 0.003 (2) | −0.022 (2) | 0.003 (3) |
O2B | 0.060 (3) | 0.076 (3) | 0.061 (3) | 0.012 (3) | −0.027 (3) | −0.005 (2) |
O3B | 0.057 (3) | 0.079 (3) | 0.049 (2) | −0.010 (3) | 0.001 (3) | 0.000 (2) |
O4B | 0.064 (3) | 0.051 (2) | 0.078 (3) | −0.027 (2) | −0.027 (3) | 0.013 (2) |
O5B | 0.040 (3) | 0.099 (4) | 0.070 (3) | 0.006 (2) | 0.001 (2) | 0.023 (3) |
C1B | 0.032 (3) | 0.035 (3) | 0.056 (3) | 0.003 (2) | −0.007 (3) | 0.004 (3) |
C2B | 0.057 (4) | 0.041 (3) | 0.063 (4) | 0.007 (3) | −0.006 (3) | 0.005 (3) |
C3B | 0.055 (4) | 0.042 (3) | 0.071 (4) | −0.006 (3) | 0.014 (4) | 0.002 (3) |
C4B | 0.031 (3) | 0.048 (4) | 0.088 (5) | −0.001 (3) | 0.012 (3) | −0.009 (4) |
C5B | 0.038 (4) | 0.037 (3) | 0.086 (5) | 0.010 (3) | −0.009 (4) | −0.007 (3) |
C6B | 0.027 (3) | 0.030 (3) | 0.069 (4) | −0.002 (2) | −0.003 (3) | −0.005 (3) |
C7B | 0.043 (4) | 0.036 (3) | 0.062 (4) | 0.005 (3) | −0.014 (3) | −0.004 (3) |
C8B | 0.040 (4) | 0.037 (3) | 0.063 (4) | −0.001 (2) | −0.011 (3) | 0.002 (3) |
C9B | 0.057 (4) | 0.039 (3) | 0.053 (3) | 0.004 (3) | −0.008 (3) | −0.005 (3) |
C10B | 0.091 (6) | 0.068 (4) | 0.046 (3) | 0.002 (4) | −0.004 (4) | −0.004 (3) |
C11B | 0.044 (4) | 0.060 (4) | 0.065 (4) | 0.017 (3) | 0.006 (3) | 0.014 (3) |
C12B | 0.039 (4) | 0.130 (8) | 0.063 (4) | 0.017 (4) | −0.002 (3) | 0.041 (5) |
C13B | 0.074 (6) | 0.166 (11) | 0.049 (4) | −0.024 (6) | −0.013 (4) | 0.008 (5) |
S1A—O5A | 1.394 (5) | S1B—O4B | 1.420 (5) |
S1A—O4A | 1.430 (5) | S1B—O5B | 1.435 (6) |
S1A—N1A | 1.638 (5) | S1B—N1B | 1.651 (5) |
S1A—C8A | 1.782 (7) | S1B—C8B | 1.724 (6) |
N1A—C1A | 1.421 (7) | N1B—C1B | 1.429 (8) |
N1A—C11A | 1.467 (8) | N1B—C11B | 1.454 (8) |
O1A—C7A | 1.330 (8) | O1B—C7B | 1.321 (7) |
O1A—H1OA | 0.8200 | O1B—H1OB | 0.8200 |
O2A—C9A | 1.226 (9) | O2B—C9B | 1.217 (8) |
O3A—C9A | 1.305 (9) | O3B—C9B | 1.303 (8) |
O3A—C10A | 1.445 (8) | O3B—C10B | 1.434 (8) |
C1A—C2A | 1.374 (9) | C1B—C6B | 1.382 (8) |
C1A—C6A | 1.406 (9) | C1B—C2B | 1.385 (9) |
C2A—C3A | 1.373 (10) | C2B—C3B | 1.422 (10) |
C2A—H2A | 0.9300 | C2B—H2B | 0.9300 |
C3A—C4A | 1.367 (12) | C3B—C4B | 1.349 (10) |
C3A—H3A | 0.9300 | C3B—H3B | 0.9300 |
C4A—C5A | 1.373 (12) | C4B—C5B | 1.364 (10) |
C4A—H4A | 0.9300 | C4B—H4B | 0.9300 |
C5A—C6A | 1.381 (9) | C5B—C6B | 1.426 (9) |
C5A—H5A | 0.9300 | C5B—H5B | 0.9300 |
C6A—C7A | 1.464 (9) | C6B—C7B | 1.456 (9) |
C7A—C8A | 1.359 (9) | C7B—C8B | 1.385 (10) |
C8A—C9A | 1.442 (9) | C8B—C9B | 1.472 (10) |
C10A—H10A | 0.9600 | C10B—H10D | 0.9600 |
C10A—H10B | 0.9600 | C10B—H10E | 0.9600 |
C10A—H10C | 0.9600 | C10B—H10F | 0.9600 |
C11A—C12A | 1.493 (13) | C11B—C12B | 1.465 (11) |
C11A—H11A | 0.9700 | C11B—H11C | 0.9700 |
C11A—H11B | 0.9700 | C11B—H11D | 0.9700 |
C12A—C13A | 1.325 (16) | C12B—C13B | 1.354 (15) |
C12A—H12A | 0.9300 | C12B—H12B | 0.9300 |
C13A—H13A | 0.9300 | C13B—H13C | 0.9300 |
C13A—H13B | 0.9300 | C13B—H13D | 0.9300 |
O5A—S1A—O4A | 120.4 (3) | O4B—S1B—O5B | 118.0 (3) |
O5A—S1A—N1A | 106.6 (3) | O4B—S1B—N1B | 108.8 (3) |
O4A—S1A—N1A | 108.7 (3) | O5B—S1B—N1B | 106.9 (3) |
O5A—S1A—C8A | 111.2 (3) | O4B—S1B—C8B | 108.3 (3) |
O4A—S1A—C8A | 107.3 (3) | O5B—S1B—C8B | 112.6 (3) |
N1A—S1A—C8A | 101.0 (3) | N1B—S1B—C8B | 100.8 (3) |
C1A—N1A—C11A | 120.7 (5) | C1B—N1B—C11B | 121.8 (5) |
C1A—N1A—S1A | 116.7 (4) | C1B—N1B—S1B | 118.8 (4) |
C11A—N1A—S1A | 121.4 (4) | C11B—N1B—S1B | 119.3 (4) |
C7A—O1A—H1OA | 109.5 | C7B—O1B—H1OB | 109.5 |
C9A—O3A—C10A | 117.9 (6) | C9B—O3B—C10B | 119.3 (6) |
C2A—C1A—C6A | 120.7 (6) | C6B—C1B—C2B | 121.6 (6) |
C2A—C1A—N1A | 119.0 (6) | C6B—C1B—N1B | 118.7 (5) |
C6A—C1A—N1A | 120.2 (6) | C2B—C1B—N1B | 119.5 (5) |
C3A—C2A—C1A | 118.3 (8) | C1B—C2B—C3B | 119.5 (6) |
C3A—C2A—H2A | 120.9 | C1B—C2B—H2B | 120.3 |
C1A—C2A—H2A | 120.9 | C3B—C2B—H2B | 120.3 |
C4A—C3A—C2A | 121.9 (8) | C4B—C3B—C2B | 119.3 (7) |
C4A—C3A—H3A | 119.0 | C4B—C3B—H3B | 120.4 |
C2A—C3A—H3A | 119.0 | C2B—C3B—H3B | 120.4 |
C3A—C4A—C5A | 120.1 (7) | C3B—C4B—C5B | 121.3 (6) |
C3A—C4A—H4A | 120.0 | C3B—C4B—H4B | 119.4 |
C5A—C4A—H4A | 120.0 | C5B—C4B—H4B | 119.4 |
C4A—C5A—C6A | 119.7 (8) | C4B—C5B—C6B | 121.5 (6) |
C4A—C5A—H5A | 120.1 | C4B—C5B—H5B | 119.2 |
C6A—C5A—H5A | 120.1 | C6B—C5B—H5B | 119.2 |
C5A—C6A—C1A | 119.2 (6) | C1B—C6B—C5B | 116.8 (6) |
C5A—C6A—C7A | 120.4 (7) | C1B—C6B—C7B | 121.9 (6) |
C1A—C6A—C7A | 120.2 (6) | C5B—C6B—C7B | 121.1 (6) |
O1A—C7A—C8A | 121.4 (6) | O1B—C7B—C8B | 122.3 (6) |
O1A—C7A—C6A | 114.6 (6) | O1B—C7B—C6B | 114.4 (6) |
C8A—C7A—C6A | 124.0 (6) | C8B—C7B—C6B | 123.3 (6) |
C7A—C8A—C9A | 121.7 (7) | C7B—C8B—C9B | 120.8 (6) |
C7A—C8A—S1A | 115.9 (5) | C7B—C8B—S1B | 116.9 (5) |
C9A—C8A—S1A | 122.3 (6) | C9B—C8B—S1B | 121.8 (5) |
O2A—C9A—O3A | 123.3 (6) | O2B—C9B—O3B | 123.7 (6) |
O2A—C9A—C8A | 121.6 (7) | O2B—C9B—C8B | 121.4 (7) |
O3A—C9A—C8A | 115.1 (6) | O3B—C9B—C8B | 114.9 (6) |
O3A—C10A—H10A | 109.5 | O3B—C10B—H10D | 109.5 |
O3A—C10A—H10B | 109.5 | O3B—C10B—H10E | 109.5 |
H10A—C10A—H10B | 109.5 | H10D—C10B—H10E | 109.5 |
O3A—C10A—H10C | 109.5 | O3B—C10B—H10F | 109.5 |
H10A—C10A—H10C | 109.5 | H10D—C10B—H10F | 109.5 |
H10B—C10A—H10C | 109.5 | H10E—C10B—H10F | 109.5 |
N1A—C11A—C12A | 114.9 (7) | N1B—C11B—C12B | 116.7 (7) |
N1A—C11A—H11A | 108.6 | N1B—C11B—H11C | 108.1 |
C12A—C11A—H11A | 108.6 | C12B—C11B—H11C | 108.1 |
N1A—C11A—H11B | 108.6 | N1B—C11B—H11D | 108.1 |
C12A—C11A—H11B | 108.6 | C12B—C11B—H11D | 108.1 |
H11A—C11A—H11B | 107.5 | H11C—C11B—H11D | 107.3 |
C13A—C12A—C11A | 125.7 (9) | C13B—C12B—C11B | 125.2 (8) |
C13A—C12A—H12A | 117.2 | C13B—C12B—H12B | 117.4 |
C11A—C12A—H12A | 117.2 | C11B—C12B—H12B | 117.4 |
C12A—C13A—H13A | 120.0 | C12B—C13B—H13C | 120.0 |
C12A—C13A—H13B | 120.0 | C12B—C13B—H13D | 120.0 |
H13A—C13A—H13B | 120.0 | H13C—C13B—H13D | 120.0 |
O5A—S1A—N1A—C1A | 167.7 (5) | O4B—S1B—N1B—C1B | −64.2 (5) |
O4A—S1A—N1A—C1A | −61.2 (5) | O5B—S1B—N1B—C1B | 167.3 (5) |
C8A—S1A—N1A—C1A | 51.4 (5) | C8B—S1B—N1B—C1B | 49.4 (5) |
O5A—S1A—N1A—C11A | 0.2 (6) | O4B—S1B—N1B—C11B | 119.2 (5) |
O4A—S1A—N1A—C11A | 131.4 (5) | O5B—S1B—N1B—C11B | −9.3 (6) |
C8A—S1A—N1A—C11A | −116.0 (5) | C8B—S1B—N1B—C11B | −127.1 (5) |
C11A—N1A—C1A—C2A | −44.4 (8) | C11B—N1B—C1B—C6B | 143.2 (6) |
S1A—N1A—C1A—C2A | 148.1 (5) | S1B—N1B—C1B—C6B | −33.2 (7) |
C11A—N1A—C1A—C6A | 132.4 (6) | C11B—N1B—C1B—C2B | −32.6 (9) |
S1A—N1A—C1A—C6A | −35.1 (7) | S1B—N1B—C1B—C2B | 150.9 (5) |
C6A—C1A—C2A—C3A | 3.5 (9) | C6B—C1B—C2B—C3B | 2.5 (9) |
N1A—C1A—C2A—C3A | −179.7 (6) | N1B—C1B—C2B—C3B | 178.2 (5) |
C1A—C2A—C3A—C4A | −1.6 (10) | C1B—C2B—C3B—C4B | −1.8 (9) |
C2A—C3A—C4A—C5A | −1.3 (11) | C2B—C3B—C4B—C5B | 0.6 (9) |
C3A—C4A—C5A—C6A | 2.2 (10) | C3B—C4B—C5B—C6B | −0.2 (9) |
C4A—C5A—C6A—C1A | −0.3 (9) | C2B—C1B—C6B—C5B | −2.0 (8) |
C4A—C5A—C6A—C7A | −175.5 (6) | N1B—C1B—C6B—C5B | −177.7 (5) |
C2A—C1A—C6A—C5A | −2.6 (9) | C2B—C1B—C6B—C7B | 173.3 (6) |
N1A—C1A—C6A—C5A | −179.4 (5) | N1B—C1B—C6B—C7B | −2.5 (8) |
C2A—C1A—C6A—C7A | 172.6 (5) | C4B—C5B—C6B—C1B | 0.8 (8) |
N1A—C1A—C6A—C7A | −4.1 (8) | C4B—C5B—C6B—C7B | −174.5 (6) |
C5A—C6A—C7A—O1A | 15.4 (8) | C1B—C6B—C7B—O1B | −165.1 (5) |
C1A—C6A—C7A—O1A | −159.8 (5) | C5B—C6B—C7B—O1B | 9.9 (8) |
C5A—C6A—C7A—C8A | −166.3 (6) | C1B—C6B—C7B—C8B | 13.5 (9) |
C1A—C6A—C7A—C8A | 18.6 (9) | C5B—C6B—C7B—C8B | −171.5 (5) |
O1A—C7A—C8A—C9A | 1.1 (9) | O1B—C7B—C8B—C9B | 2.4 (9) |
C6A—C7A—C8A—C9A | −177.1 (5) | C6B—C7B—C8B—C9B | −176.1 (5) |
O1A—C7A—C8A—S1A | −175.3 (5) | O1B—C7B—C8B—S1B | −170.5 (4) |
C6A—C7A—C8A—S1A | 6.4 (8) | C6B—C7B—C8B—S1B | 11.1 (8) |
O5A—S1A—C8A—C7A | −150.2 (5) | O4B—S1B—C8B—C7B | 76.5 (5) |
O4A—S1A—C8A—C7A | 76.4 (5) | O5B—S1B—C8B—C7B | −151.2 (4) |
N1A—S1A—C8A—C7A | −37.3 (5) | N1B—S1B—C8B—C7B | −37.6 (5) |
O5A—S1A—C8A—C9A | 33.4 (6) | O4B—S1B—C8B—C9B | −96.3 (5) |
O4A—S1A—C8A—C9A | −100.1 (5) | O5B—S1B—C8B—C9B | 36.0 (6) |
N1A—S1A—C8A—C9A | 146.2 (5) | N1B—S1B—C8B—C9B | 149.6 (5) |
C10A—O3A—C9A—O2A | 4.1 (9) | C10B—O3B—C9B—O2B | 3.3 (9) |
C10A—O3A—C9A—C8A | −178.7 (5) | C10B—O3B—C9B—C8B | −175.2 (5) |
C7A—C8A—C9A—O2A | 2.2 (9) | C7B—C8B—C9B—O2B | −0.2 (9) |
S1A—C8A—C9A—O2A | 178.5 (5) | S1B—C8B—C9B—O2B | 172.3 (5) |
C7A—C8A—C9A—O3A | −175.0 (5) | C7B—C8B—C9B—O3B | 178.3 (5) |
S1A—C8A—C9A—O3A | 1.2 (8) | S1B—C8B—C9B—O3B | −9.2 (8) |
C1A—N1A—C11A—C12A | 103.1 (7) | C1B—N1B—C11B—C12B | 97.5 (7) |
S1A—N1A—C11A—C12A | −89.9 (7) | S1B—N1B—C11B—C12B | −86.1 (7) |
N1A—C11A—C12A—C13A | 8.8 (11) | N1B—C11B—C12B—C13B | 10.2 (11) |
D—H···A | D—H | H···A | D···A | D—H···A |
O1A—H1OA···O2A | 0.82 | 1.84 | 2.553 (8) | 144 |
O1B—H1OB···O2B | 0.82 | 1.87 | 2.588 (8) | 146 |
D—H···A | D—H | H···A | D···A | D—H···A |
O1A—H1OA···O2A | 0.82 | 1.84 | 2.553 (8) | 144.2 |
O1B—H1OB···O2B | 0.82 | 1.87 | 2.588 (8) | 146.1 |
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Oxicams are in integral part of the range of modern non-steroidal anti-inflammatory drugs (Kleemann et al., 2008). We have carried out the synthesis and studied the peculiarities of the spatial structure of methyl 4-hydroxy-1-methyl-2,2-dioxo-1H-2λ6,1-benzothiazine-3-carboxylate (I) being of interest as the initial product for obtaining 4-hydroxy-2,2-dioxo-1H- 2λ6,1-benzothiazine-3-carboxamides. By now these compounds remain absolutely unstudied though they are isomers of oxicams and differ from them only by the reverse mutual arrangement of nitrogen and sulfur atoms in the thiazine cycle. Two molecules (IA and IB) are observed in asymmetric part of crystal unit cell. The dihydrothiazine heterocycle adopts an intermediate between twist-boat and sofa conformation (the puckering parameters [1] are: S=0.64, Θ=55.8°, Ψ=22.9° for IA and S=0.61, Θ=50.2°, Ψ=21.1° for IB). Deviations of the S1 and C8 atoms from the mean plane of the remaining atoms of this ring are 0.91 Å and 0.29 Å, respectivey, in IA and -0.84 Å and -0.23 Å, in IB. The formation of the strong O1—H···O2 hydrogen bond (Table 1) results in coplanarity of the ester substituent to the C7—C8 endocyclic double bond (the C7—C8—C9—O2 torsion angle is 2.7 (7)° in IA and -0.8 (7)° in IB). The vinyl fragment is orthogonal to the hetetocyclic plane and is coplanar to the N1—C11 bond (the C1—N1—C11—C12 and N1—C11—C12—C13 torsion angles are 103.1 (6)° IA 98.2 (5)° IB and 9.3 (9)° IA 8.5 (9)%A IB, respectively). The repulsion between allyl substituent and atoms of the bicyclic fragment [the H2···C11 distance is 2.76Å IA 2.70Å IB, H11a···C2 2.76Å IA 2.71° IB, H11b···O5 2.41Å IA 2.38Å IB as compared to the van der Waals radii sum 2.87 Å for H···C contact and 2.46 Å for H···O (Zefirov, 1997)] results in elongation of the C1—N1 bond up to 1.416 (6) Å in IA and 1.414 (6) Å in IB while its mean value is 1.371 Å (Bürgi & Dunitz, 1994).