organic compounds
2-Tosyl-2,3,3a,4,9,9a-hexahydro-1H-benzo[f]isoindol-1-one
aSchool of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, People's Republic of China
*Correspondence e-mail: yiminhu@yahoo.cn
The title compound, C19H19NO3S, was produced by the self-reaction of N-cinnamyl-N-tosylacrylamide in the presence of palladium(II) acetate via an intramolecular C—C coupling reaction and C—H activation. There are two chiral C atoms in the molecule, but the crystal is a racemic system due to a lack of chiral separation. The five-membered ring is twisted about the methylene–methane bond, and the cyclohexa-1,4-diene ring has a boat conformation. The dihedral angle between the benzene rings is 88.27 (14)°, indicating an almost orthogonal relationship and an approximate L-shape for the molecule. In the crystal, the presence of C—H⋯π interactions leads to inversion dimers.
Related literature
For palladium-catalysed intermolecular and intramolecular reactions, see: Zhao et al. (2012) and for palladium-catalysed coupling reactions, see: Meng et al. (2011); Hu et al. (2011). They have made a wide variety active pharmaceutical ingredients and complex organic molecules economically accessible, see: Hu et al. (2009, 2010). For the physiological activity of benzo[f]isoindol-1-one derivatives, see: Pitchumani & Vijaikumar (2010).
Experimental
Crystal data
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Data collection: SMART (Bruker, 2000); cell SAINT (Bruker, 2000); 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/S1600536813011045/bv2220sup1.cif
contains datablocks global, I. DOI:Structure factors: contains datablock I. DOI: 10.1107/S1600536813011045/bv2220Isup2.hkl
Supporting information file. DOI: 10.1107/S1600536813011045/bv2220Isup3.cml
An oven-dried Schlenk flask was evacuated, filled with nitrogen, and then charged with N-cinnamyl-N-tosylacrylamide (3.41 g, 10 mmol), tributylamine (3 ml), PPh3 (52.5 mg, 0.2 mmol), Pd(OAc)2 (24 mg, 0.1 mol), and DMF (10 ml) to give a yellow solution. The reaction mixture was heated at 393 K with stirring. The reaction mixture was cooled to room temperature after 16 h and the resultant yellow-orange mixture was diluted with Et2O (10 ml). The mixture was washed with H2O (15 ml) and the aqueous layer was extracted with Et2O (20 ml). The combined organic layers were dried (MgSO4), filtered, and concentrated in vacuo. The crude material was purified by flash
on silica gel (petroleum ester:EtOAc = 7:1) and recrystalized from EtOAc, yield 3.11 g (91%). Colorless crystals suitable for X-ray diffraction were obtained by recrystallization from a solution of the title compound from ethyl acetate over a period of one week.H atoms were positioned geometrically and refined using a riding model with C—H = 0.93–0.97 Å, and with Uiso(H) = 1.2 times Ueq(C).
Data collection: SMART (Bruker, 2000); cell
SAINT (Bruker, 2000); data reduction: SAINT (Bruker, 2000); 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).C19H19NO3S | Z = 2 |
Mr = 341.41 | F(000) = 360 |
Triclinic, P1 | Dx = 1.365 Mg m−3 |
Hall symbol: -P 1 | Mo Kα radiation, λ = 0.71073 Å |
a = 6.4389 (8) Å | Cell parameters from 3121 reflections |
b = 8.4336 (11) Å | θ = 2.1–23.6° |
c = 15.4958 (12) Å | µ = 0.21 mm−1 |
α = 89.312 (2)° | T = 291 K |
β = 87.395 (3)° | Block, colorless |
γ = 81.224 (2)° | 0.28 × 0.24 × 0.22 mm |
V = 830.75 (16) Å3 |
Bruker SMART APEX CCD diffractometer | 3724 independent reflections |
Radiation source: sealed tube | 1902 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.041 |
phi and ω scans | θmax = 27.5°, θmin = 1.3° |
Absorption correction: multi-scan (SADABS; Bruker, 2000) | h = −8→8 |
Tmin = 0.943, Tmax = 0.955 | k = −10→10 |
7242 measured reflections | l = −20→18 |
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)] = 0.055 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.140 | H-atom parameters constrained |
S = 1.00 | w = 1/[σ2(Fo2) + (0.0538P)2 + 0.0132P] where P = (Fo2 + 2Fc2)/3 |
3724 reflections | (Δ/σ)max = 0.002 |
218 parameters | Δρmax = 0.19 e Å−3 |
1 restraint | Δρmin = −0.27 e Å−3 |
C19H19NO3S | γ = 81.224 (2)° |
Mr = 341.41 | V = 830.75 (16) Å3 |
Triclinic, P1 | Z = 2 |
a = 6.4389 (8) Å | Mo Kα radiation |
b = 8.4336 (11) Å | µ = 0.21 mm−1 |
c = 15.4958 (12) Å | T = 291 K |
α = 89.312 (2)° | 0.28 × 0.24 × 0.22 mm |
β = 87.395 (3)° |
Bruker SMART APEX CCD diffractometer | 3724 independent reflections |
Absorption correction: multi-scan (SADABS; Bruker, 2000) | 1902 reflections with I > 2σ(I) |
Tmin = 0.943, Tmax = 0.955 | Rint = 0.041 |
7242 measured reflections |
R[F2 > 2σ(F2)] = 0.055 | 1 restraint |
wR(F2) = 0.140 | H-atom parameters constrained |
S = 1.00 | Δρmax = 0.19 e Å−3 |
3724 reflections | Δρmin = −0.27 e Å−3 |
218 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 | 0.3560 (5) | 0.2477 (3) | 1.14379 (19) | 0.0529 (8) | |
H1 | 0.2229 | 0.2911 | 1.1658 | 0.063* | |
C2 | 0.5104 (6) | 0.1853 (4) | 1.1995 (2) | 0.0632 (9) | |
H2 | 0.4793 | 0.1846 | 1.2587 | 0.076* | |
C3 | 0.7085 (6) | 0.1248 (4) | 1.1681 (2) | 0.0632 (9) | |
H3 | 0.8121 | 0.0837 | 1.2058 | 0.076* | |
C4 | 0.7530 (5) | 0.1253 (3) | 1.0804 (2) | 0.0516 (8) | |
H4 | 0.8885 | 0.0863 | 1.0593 | 0.062* | |
C5 | 0.6001 (4) | 0.1827 (3) | 1.02266 (18) | 0.0402 (7) | |
C6 | 0.3994 (4) | 0.2456 (3) | 1.05538 (18) | 0.0420 (7) | |
C7 | 0.2351 (4) | 0.3035 (4) | 0.99167 (19) | 0.0509 (8) | |
H7A | 0.1217 | 0.3744 | 1.0211 | 0.061* | |
H7B | 0.1771 | 0.2121 | 0.9711 | 0.061* | |
C8 | 0.3179 (4) | 0.3927 (3) | 0.91382 (17) | 0.0402 (7) | |
H8 | 0.2959 | 0.5078 | 0.9264 | 0.048* | |
C9 | 0.5518 (4) | 0.3398 (3) | 0.88727 (16) | 0.0383 (7) | |
H9 | 0.6331 | 0.4209 | 0.9067 | 0.046* | |
C10 | 0.6378 (4) | 0.1798 (3) | 0.92661 (17) | 0.0421 (7) | |
H10A | 0.5702 | 0.0963 | 0.9024 | 0.050* | |
H10B | 0.7876 | 0.1552 | 0.9127 | 0.050* | |
C11 | 0.5606 (4) | 0.3383 (4) | 0.78857 (18) | 0.0474 (8) | |
H11A | 0.6051 | 0.4355 | 0.7652 | 0.057* | |
H11B | 0.6567 | 0.2464 | 0.7666 | 0.057* | |
C12 | 0.1997 (5) | 0.3657 (4) | 0.83510 (19) | 0.0478 (7) | |
C13 | 0.1097 (4) | 0.4760 (3) | 0.64007 (17) | 0.0424 (7) | |
C14 | −0.0883 (4) | 0.4722 (4) | 0.61141 (18) | 0.0510 (8) | |
H14 | −0.1412 | 0.3758 | 0.6087 | 0.061* | |
C15 | −0.2072 (5) | 0.6144 (5) | 0.58664 (19) | 0.0614 (9) | |
H15 | −0.3399 | 0.6120 | 0.5658 | 0.074* | |
C16 | −0.1359 (6) | 0.7594 (4) | 0.59177 (19) | 0.0621 (9) | |
C17 | 0.0634 (6) | 0.7592 (4) | 0.6211 (2) | 0.0703 (10) | |
H17 | 0.1151 | 0.8558 | 0.6252 | 0.084* | |
C18 | 0.1867 (5) | 0.6194 (4) | 0.6445 (2) | 0.0631 (9) | |
H18 | 0.3215 | 0.6214 | 0.6632 | 0.076* | |
C19 | −0.2678 (6) | 0.9147 (5) | 0.5653 (2) | 0.0981 (14) | |
H19A | −0.2730 | 0.9919 | 0.6106 | 0.147* | |
H19B | −0.4078 | 0.8957 | 0.5549 | 0.147* | |
H19C | −0.2064 | 0.9551 | 0.5135 | 0.147* | |
N1 | 0.3425 (3) | 0.3281 (3) | 0.76626 (14) | 0.0429 (6) | |
O1 | 0.0116 (3) | 0.3754 (3) | 0.83041 (14) | 0.0784 (8) | |
O2 | 0.4664 (3) | 0.2878 (3) | 0.61566 (13) | 0.0654 (6) | |
O3 | 0.1562 (4) | 0.1696 (2) | 0.66729 (15) | 0.0769 (7) | |
S1 | 0.27381 (13) | 0.29881 (9) | 0.66632 (5) | 0.0514 (3) |
U11 | U22 | U33 | U12 | U13 | U23 | |
C1 | 0.062 (2) | 0.0443 (18) | 0.051 (2) | −0.0084 (16) | 0.0091 (17) | −0.0015 (15) |
C2 | 0.088 (3) | 0.062 (2) | 0.0405 (19) | −0.015 (2) | −0.0038 (19) | −0.0014 (16) |
C3 | 0.073 (3) | 0.062 (2) | 0.056 (2) | −0.012 (2) | −0.0174 (19) | 0.0071 (17) |
C4 | 0.0528 (19) | 0.0468 (18) | 0.056 (2) | −0.0073 (15) | −0.0084 (16) | 0.0053 (15) |
C5 | 0.0443 (17) | 0.0313 (15) | 0.0456 (18) | −0.0079 (13) | −0.0024 (14) | 0.0049 (12) |
C6 | 0.0468 (18) | 0.0358 (16) | 0.0434 (18) | −0.0082 (14) | 0.0033 (14) | 0.0000 (13) |
C7 | 0.0381 (17) | 0.0528 (19) | 0.060 (2) | −0.0048 (14) | 0.0082 (15) | 0.0021 (15) |
C8 | 0.0320 (16) | 0.0358 (16) | 0.0514 (18) | −0.0013 (12) | 0.0003 (13) | 0.0006 (13) |
C9 | 0.0311 (15) | 0.0395 (16) | 0.0451 (17) | −0.0082 (12) | −0.0022 (12) | 0.0026 (12) |
C10 | 0.0351 (16) | 0.0374 (16) | 0.0523 (19) | −0.0018 (13) | 0.0004 (13) | −0.0018 (13) |
C11 | 0.0303 (16) | 0.058 (2) | 0.0524 (19) | −0.0017 (14) | −0.0056 (13) | 0.0079 (14) |
C12 | 0.0337 (17) | 0.055 (2) | 0.054 (2) | −0.0039 (14) | −0.0043 (15) | 0.0103 (15) |
C13 | 0.0415 (17) | 0.0445 (17) | 0.0409 (17) | −0.0038 (14) | −0.0073 (13) | 0.0063 (13) |
C14 | 0.0422 (18) | 0.065 (2) | 0.0459 (19) | −0.0080 (16) | −0.0033 (15) | 0.0028 (15) |
C15 | 0.0412 (19) | 0.089 (3) | 0.049 (2) | 0.0066 (19) | −0.0047 (15) | 0.0037 (19) |
C16 | 0.068 (2) | 0.069 (2) | 0.0385 (19) | 0.0218 (19) | 0.0013 (17) | 0.0017 (16) |
C17 | 0.089 (3) | 0.050 (2) | 0.070 (2) | −0.001 (2) | −0.020 (2) | 0.0058 (18) |
C18 | 0.057 (2) | 0.055 (2) | 0.078 (3) | −0.0072 (18) | −0.0216 (18) | 0.0065 (18) |
C19 | 0.115 (3) | 0.087 (3) | 0.073 (3) | 0.046 (3) | −0.009 (2) | 0.013 (2) |
N1 | 0.0325 (13) | 0.0520 (15) | 0.0437 (15) | −0.0036 (11) | −0.0070 (11) | 0.0052 (11) |
O1 | 0.0266 (12) | 0.135 (2) | 0.0729 (17) | −0.0107 (13) | −0.0060 (11) | 0.0115 (15) |
O2 | 0.0576 (12) | 0.0761 (16) | 0.0547 (14) | 0.0166 (12) | −0.0041 (9) | −0.0101 (11) |
O3 | 0.0937 (18) | 0.0507 (14) | 0.0942 (18) | −0.0258 (13) | −0.0428 (14) | 0.0088 (12) |
S1 | 0.0530 (5) | 0.0458 (5) | 0.0553 (5) | −0.0035 (4) | −0.0151 (4) | −0.0002 (4) |
C1—C2 | 1.385 (4) | C11—N1 | 1.477 (3) |
C1—C6 | 1.385 (4) | C11—H11A | 0.9700 |
C1—H1 | 0.9300 | C11—H11B | 0.9700 |
C2—C3 | 1.369 (4) | C12—O1 | 1.207 (3) |
C2—H2 | 0.9300 | C12—N1 | 1.383 (3) |
C3—C4 | 1.378 (4) | C13—C14 | 1.374 (4) |
C3—H3 | 0.9300 | C13—C18 | 1.379 (4) |
C4—C5 | 1.388 (4) | C13—S1 | 1.749 (3) |
C4—H4 | 0.9300 | C14—C15 | 1.381 (4) |
C5—C6 | 1.396 (4) | C14—H14 | 0.9300 |
C5—C10 | 1.497 (4) | C15—C16 | 1.375 (5) |
C6—C7 | 1.503 (4) | C15—H15 | 0.9300 |
C7—C8 | 1.532 (4) | C16—C17 | 1.381 (5) |
C7—H7A | 0.9700 | C16—C19 | 1.511 (4) |
C7—H7B | 0.9700 | C17—C18 | 1.372 (4) |
C8—C12 | 1.504 (4) | C17—H17 | 0.9300 |
C8—C9 | 1.542 (3) | C18—H18 | 0.9300 |
C8—H8 | 0.9800 | C19—H19A | 0.9600 |
C9—C10 | 1.511 (3) | C19—H19B | 0.9600 |
C9—C11 | 1.528 (4) | C19—H19C | 0.9600 |
C9—H9 | 0.9800 | N1—S1 | 1.661 (2) |
C10—H10A | 0.9700 | O2—S1 | 1.428 (2) |
C10—H10B | 0.9700 | O3—S1 | 1.419 (2) |
C2—C1—C6 | 120.1 (3) | N1—C11—C9 | 104.1 (2) |
C2—C1—H1 | 119.9 | N1—C11—H11A | 110.9 |
C6—C1—H1 | 119.9 | C9—C11—H11A | 110.9 |
C3—C2—C1 | 120.5 (3) | N1—C11—H11B | 110.9 |
C3—C2—H2 | 119.7 | C9—C11—H11B | 110.9 |
C1—C2—H2 | 119.7 | H11A—C11—H11B | 108.9 |
C2—C3—C4 | 119.4 (3) | O1—C12—N1 | 124.1 (3) |
C2—C3—H3 | 120.3 | O1—C12—C8 | 127.0 (3) |
C4—C3—H3 | 120.3 | N1—C12—C8 | 108.8 (2) |
C3—C4—C5 | 121.4 (3) | C14—C13—C18 | 120.4 (3) |
C3—C4—H4 | 119.3 | C14—C13—S1 | 120.8 (2) |
C5—C4—H4 | 119.3 | C18—C13—S1 | 118.7 (2) |
C4—C5—C6 | 118.6 (3) | C13—C14—C15 | 118.6 (3) |
C4—C5—C10 | 123.6 (3) | C13—C14—H14 | 120.7 |
C6—C5—C10 | 117.8 (2) | C15—C14—H14 | 120.7 |
C1—C6—C5 | 119.8 (3) | C16—C15—C14 | 122.2 (3) |
C1—C6—C7 | 122.5 (3) | C16—C15—H15 | 118.9 |
C5—C6—C7 | 117.7 (2) | C14—C15—H15 | 118.9 |
C6—C7—C8 | 113.8 (2) | C15—C16—C17 | 117.7 (3) |
C6—C7—H7A | 108.8 | C15—C16—C19 | 121.9 (4) |
C8—C7—H7A | 108.8 | C17—C16—C19 | 120.4 (4) |
C6—C7—H7B | 108.8 | C18—C17—C16 | 121.4 (3) |
C8—C7—H7B | 108.8 | C18—C17—H17 | 119.3 |
H7A—C7—H7B | 107.7 | C16—C17—H17 | 119.3 |
C12—C8—C7 | 110.1 (2) | C17—C18—C13 | 119.6 (3) |
C12—C8—C9 | 105.1 (2) | C17—C18—H18 | 120.2 |
C7—C8—C9 | 115.3 (2) | C13—C18—H18 | 120.2 |
C12—C8—H8 | 108.7 | C16—C19—H19A | 109.5 |
C7—C8—H8 | 108.7 | C16—C19—H19B | 109.5 |
C9—C8—H8 | 108.7 | H19A—C19—H19B | 109.5 |
C10—C9—C11 | 113.2 (2) | C16—C19—H19C | 109.5 |
C10—C9—C8 | 112.0 (2) | H19A—C19—H19C | 109.5 |
C11—C9—C8 | 105.2 (2) | H19B—C19—H19C | 109.5 |
C10—C9—H9 | 108.8 | C12—N1—C11 | 112.5 (2) |
C11—C9—H9 | 108.8 | C12—N1—S1 | 123.75 (19) |
C8—C9—H9 | 108.8 | C11—N1—S1 | 123.24 (19) |
C5—C10—C9 | 110.7 (2) | O3—S1—O2 | 119.80 (15) |
C5—C10—H10A | 109.5 | O3—S1—N1 | 108.71 (13) |
C9—C10—H10A | 109.5 | O2—S1—N1 | 104.22 (12) |
C5—C10—H10B | 109.5 | O3—S1—C13 | 109.13 (14) |
C9—C10—H10B | 109.5 | O2—S1—C13 | 109.42 (13) |
H10A—C10—H10B | 108.1 | N1—S1—C13 | 104.41 (12) |
C6—C1—C2—C3 | 1.6 (5) | C18—C13—C14—C15 | 0.5 (4) |
C1—C2—C3—C4 | −0.4 (5) | S1—C13—C14—C15 | −176.2 (2) |
C2—C3—C4—C5 | −1.4 (5) | C13—C14—C15—C16 | −1.6 (5) |
C3—C4—C5—C6 | 2.1 (4) | C14—C15—C16—C17 | 1.4 (5) |
C3—C4—C5—C10 | −177.4 (3) | C14—C15—C16—C19 | −179.4 (3) |
C2—C1—C6—C5 | −1.0 (4) | C15—C16—C17—C18 | 0.0 (5) |
C2—C1—C6—C7 | 176.7 (3) | C19—C16—C17—C18 | −179.2 (3) |
C4—C5—C6—C1 | −0.8 (4) | C16—C17—C18—C13 | −1.1 (5) |
C10—C5—C6—C1 | 178.6 (2) | C14—C13—C18—C17 | 0.8 (5) |
C4—C5—C6—C7 | −178.6 (2) | S1—C13—C18—C17 | 177.6 (2) |
C10—C5—C6—C7 | 0.9 (4) | O1—C12—N1—C11 | 175.1 (3) |
C1—C6—C7—C8 | 142.4 (3) | C8—C12—N1—C11 | −4.5 (3) |
C5—C6—C7—C8 | −39.9 (3) | O1—C12—N1—S1 | 2.8 (4) |
C6—C7—C8—C12 | 148.4 (2) | C8—C12—N1—S1 | −176.76 (18) |
C6—C7—C8—C9 | 29.6 (3) | C9—C11—N1—C12 | 16.0 (3) |
C12—C8—C9—C10 | −105.2 (3) | C9—C11—N1—S1 | −171.72 (18) |
C7—C8—C9—C10 | 16.3 (3) | C12—N1—S1—O3 | −59.7 (3) |
C12—C8—C9—C11 | 18.1 (3) | C11—N1—S1—O3 | 128.9 (2) |
C7—C8—C9—C11 | 139.6 (2) | C12—N1—S1—O2 | 171.5 (2) |
C4—C5—C10—C9 | −133.4 (3) | C11—N1—S1—O2 | 0.1 (3) |
C6—C5—C10—C9 | 47.2 (3) | C12—N1—S1—C13 | 56.7 (2) |
C11—C9—C10—C5 | −172.8 (2) | C11—N1—S1—C13 | −114.7 (2) |
C8—C9—C10—C5 | −54.2 (3) | C14—C13—S1—O3 | −10.0 (3) |
C10—C9—C11—N1 | 102.2 (2) | C18—C13—S1—O3 | 173.2 (2) |
C8—C9—C11—N1 | −20.3 (3) | C14—C13—S1—O2 | 122.8 (2) |
C7—C8—C12—O1 | 46.7 (4) | C18—C13—S1—O2 | −53.9 (3) |
C9—C8—C12—O1 | 171.6 (3) | C14—C13—S1—N1 | −126.1 (2) |
C7—C8—C12—N1 | −133.7 (2) | C18—C13—S1—N1 | 57.1 (3) |
C9—C8—C12—N1 | −8.9 (3) |
Cg1 is the centroid of the C1–C6 ring. |
D—H···A | D—H | H···A | D···A | D—H···A |
C10—H10A···Cg1i | 0.97 | 2.63 | 3.555 (3) | 159 |
Symmetry code: (i) −x+1, −y, −z+2. |
Experimental details
Crystal data | |
Chemical formula | C19H19NO3S |
Mr | 341.41 |
Crystal system, space group | Triclinic, P1 |
Temperature (K) | 291 |
a, b, c (Å) | 6.4389 (8), 8.4336 (11), 15.4958 (12) |
α, β, γ (°) | 89.312 (2), 87.395 (3), 81.224 (2) |
V (Å3) | 830.75 (16) |
Z | 2 |
Radiation type | Mo Kα |
µ (mm−1) | 0.21 |
Crystal size (mm) | 0.28 × 0.24 × 0.22 |
Data collection | |
Diffractometer | Bruker SMART APEX CCD diffractometer |
Absorption correction | Multi-scan (SADABS; Bruker, 2000) |
Tmin, Tmax | 0.943, 0.955 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 7242, 3724, 1902 |
Rint | 0.041 |
(sin θ/λ)max (Å−1) | 0.650 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.055, 0.140, 1.00 |
No. of reflections | 3724 |
No. of parameters | 218 |
No. of restraints | 1 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.19, −0.27 |
Computer programs: SMART (Bruker, 2000), SAINT (Bruker, 2000), SHELXTL (Sheldrick, 2008).
Cg1 is the centroid of the C1–C6 ring. |
D—H···A | D—H | H···A | D···A | D—H···A |
C10—H10A···Cg1i | 0.97 | 2.63 | 3.555 (3) | 159 |
Symmetry code: (i) −x+1, −y, −z+2. |
Acknowledgements
We thank the National Science Foundation of China (project Nos. 21272005 and 21072003) for financial support for this work.
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Palladium-catalyzed intermolecular and intramolecular reactions have become an important tool of modern organic synthesis chemistry(Zhao et al., 2012). They have made a wide variety of active pharmaceutical ingredients and complex organic molecules economically accessible(Hu et al., 2009; Hu et al., 2010). The benzo[f]isoindol-1-one derivatives, which have physiological activity, are effective intermediates in the preparation of many complex natural products(Pitchumani et al., 2010). We have reported some novel palladium-catalyzed coupling reactions of aryl halides with the olefins and dienes(Meng et al., 2011; Hu et al., 2011). The self-reaction of N-cinnamyl-N-tosylacrylamide, in the presence of palladium(II) acetate and triphenylphosphine, in DMF at 393 K for 16 h, gave the unexpected title product.
The crystal structure data of molecule (I), C19H19NO3S, reveals that all the bond lengths and angles have normal values. An asymmetric unit is composed of one title compound molecule. The title compound molecule contains two phenyl ring, one five-member carbon ring, and one six-member carbon ring. All the rings are not coplanar (figure 1). In the molecule (I) there are two chiral carbon atoms, C8 and C9, but the crystal is a racemic system due to lacking of the chiral separation. The five-membered ring is twisted about the methylene–methane bond, and the cyclohexa-1,4-diene ring has a boat conformation. The dihedral angle between the benzene rings is 88.27 (14)°, indicating an almost orthogonal relationship and an approximate L-shape for the molecule. In the crystal, the presence of C—H···π interactions leads to inversion dimers. The molecules with R, S(C8, C9) conformation form a 1-D chain through weak H9···O1i(i: 1 + x, y,z) interactions, so do molecules with S, R(C8iii, C9iii) conformation (H9iii···O1iv (iii: -x, 1 - y,1 - z; iv: 1 - x,1 - y,1 - z). Two chains are parallel with each other along the a axis(Fig. 2).