organic compounds
1-[(1R*,2R*)-1,2-Dihydroxy-1,2-dihydronaphthalen-1-yl]ethan-1-one
aDepartment of Chemistry, University of Toronto, Toronto, Ontario, M5S 3H6, Canada, and bDepartment of Chemistry, University of Guelph, Guelph, Ontario, N1G 2W1, Canada
*Correspondence e-mail: alan.lough@utoronto.ca
The 12H12O3, confirms the relative stereochemistry. The 1,2-dihydrobenzene ring is in a flattened half-chair conformation. In the crystal, O—H⋯O hydrogen bonds link the molecules into layers lying parallel to (001).
of the centrosymmetic title compound, CCCDC reference: 1913420
Structure description
In past years, our research group has investigated the effects of various C1-substituted oxabenzonorbornadienes (OBDs) on controlling the regioselectivity of ring-opening reactions (Ballantine et al., 2009; Edmunds et al., 2015, 2016; Raheem et al., 2014). Very recently, Yang et al. (2019) reported the first iridium-catalysed ring-opening reaction of oxa/aza benzonorbornadienes with various alcohol nucleophiles. Based upon these findings, we set out to determine the effect of C1 substitution on controlling the regioselectivity of this reaction on unsymmetrical OBDs. The reaction of the C1-substituted OBD (I) with water in the presence of [Ir(COD)Cl]2 and tetrabutylammonium iodide afforded exclusively the C2 regioisomer (II) in an 85% yield (Fig. 1). The relative stereochemistry of the diol system was determined by single-crystal X-ray analysis: of the cis or trans isomers potentially formed, only the trans stereoisomer was obtained.
The molecular structure of the title compound is shown in Fig. 2. The 1,2-dihydrobenzene ring is in a flattened half-chair conformation. Atoms C3/C3/C5/C10 are essentially planar and atoms C1 and C2 deviate from this plane by −0.248 (1) and 0.149 (1) Å, respectively. In the crystal, O—H⋯O hydrogen bonds link the molecules (Table 1, Fig. 3) forming a two-dimensional network lying parallel to (001).
Synthesis and crystallization
To a 100 ml round-bottom flask open to air was added tetrabutylammonium iodide (TBAI) (989 mg, 1 equiv), oxabenzonorbornadiene (I) (2.68 mmol), and [Ir(COD)Cl]2 (36 mg, 2 mol%) dissolved in a 40 ml 2:1 dioxane:water mixture. This reaction was left to stir at 353 K for 45 min, after which it was cooled to room temperature and diluted in EtOAc (20 ml) and subsequently washed with EtOAc (3 × 15 ml). The combined organic layers were concentrated and the crude reaction mixture was purified by flash (EtOAc:hexanes 1:2) to obtain the ring-opened product II (462 mg, 2.26 mmol, 85%) as a white solid. The product was recrystallized from the mixed solvents of EtOAc:hexanes (2.5:7.5 v:v) to give product II as colourless crystals.
Refinement
Crystal data, data collection and structure .
details are summarized in Table 2Structural data
CCDC reference: 1913420
https://doi.org/10.1107/S2414314619006096/hb4297sup1.cif
contains datablock I. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S2414314619006096/hb4297Isup2.hkl
Data collection: APEX3 (Bruker, 2018); cell
APEX3 (Bruker, 2018); data reduction: SAINT (Bruker, 2018); program(s) used to solve structure: SHELXT2014 (Sheldrick, 2015a); program(s) used to refine structure: SHELXL2018 (Sheldrick, 2015b); molecular graphics: PLATON (Spek, 2009); software used to prepare material for publication: publCIF (Westrip, 2010).C12H12O3 | Dx = 1.362 Mg m−3 |
Mr = 204.22 | Cu Kα radiation, λ = 1.54178 Å |
Orthorhombic, Pbca | Cell parameters from 9970 reflections |
a = 10.8313 (4) Å | θ = 3.7–67.5° |
b = 7.6180 (3) Å | µ = 0.80 mm−1 |
c = 24.1463 (8) Å | T = 150 K |
V = 1992.38 (13) Å3 | Shard, colourless |
Z = 8 | 0.21 × 0.18 × 0.16 mm |
F(000) = 864 |
Bruker Kappa APEX DUO CCD diffractometer | 1742 reflections with I > 2σ(I) |
Radiation source: Bruker ImuS with multi-layer optics | Rint = 0.022 |
φ and ω scans | θmax = 67.5°, θmin = 3.7° |
Absorption correction: multi-scan (SADABS; Krause et al., 2015) | h = −12→12 |
Tmin = 0.683, Tmax = 0.753 | k = −9→9 |
13267 measured reflections | l = −28→28 |
1782 independent reflections |
Refinement on F2 | Primary atom site location: dual |
Least-squares matrix: full | Hydrogen site location: mixed |
R[F2 > 2σ(F2)] = 0.034 | H atoms treated by a mixture of independent and constrained refinement |
wR(F2) = 0.088 | w = 1/[σ2(Fo2) + (0.0445P)2 + 0.8018P] where P = (Fo2 + 2Fc2)/3 |
S = 1.05 | (Δ/σ)max < 0.001 |
1782 reflections | Δρmax = 0.16 e Å−3 |
145 parameters | Δρmin = −0.21 e Å−3 |
0 restraints |
Geometry. All esds (except the esd in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell esds are taken into account individually in the estimation of esds in distances, angles and torsion angles; correlations between esds in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell esds is used for estimating esds involving l.s. planes. |
Refinement. H atoms bonded to C atoms were placed in calculated positions and refined in a riding-model approximation with Uiso(H) = 1.2Ueq(C) or 1.5Ueq(Cmethyl). H atoms bonded to O atoms were refined independently with an isotropic displacement parameter. |
x | y | z | Uiso*/Ueq | ||
O1 | 0.42766 (8) | 0.51398 (11) | 0.41021 (3) | 0.0251 (2) | |
H1O | 0.352 (2) | 0.490 (3) | 0.4061 (8) | 0.061 (6)* | |
O2 | 0.52984 (8) | 0.27780 (12) | 0.49706 (3) | 0.0271 (2) | |
H2O | 0.5500 (15) | 0.340 (2) | 0.5260 (8) | 0.049 (5)* | |
O3 | 0.29996 (8) | 0.22665 (14) | 0.40191 (4) | 0.0383 (3) | |
C1 | 0.49858 (10) | 0.35827 (15) | 0.40262 (4) | 0.0199 (3) | |
C2 | 0.59229 (10) | 0.35080 (14) | 0.45046 (4) | 0.0210 (3) | |
H2A | 0.614906 | 0.474383 | 0.460049 | 0.025* | |
C3 | 0.70942 (11) | 0.25496 (15) | 0.43728 (5) | 0.0254 (3) | |
H3A | 0.757906 | 0.211344 | 0.467036 | 0.031* | |
C4 | 0.74845 (11) | 0.22829 (15) | 0.38585 (5) | 0.0253 (3) | |
H4A | 0.825281 | 0.170966 | 0.380112 | 0.030* | |
C5 | 0.67633 (11) | 0.28480 (14) | 0.33766 (5) | 0.0217 (3) | |
C6 | 0.72385 (11) | 0.27239 (16) | 0.28412 (5) | 0.0283 (3) | |
H6A | 0.802888 | 0.221366 | 0.278469 | 0.034* | |
C7 | 0.65723 (12) | 0.33359 (18) | 0.23898 (5) | 0.0326 (3) | |
H7A | 0.690314 | 0.323634 | 0.202679 | 0.039* | |
C8 | 0.54248 (12) | 0.40913 (18) | 0.24702 (5) | 0.0310 (3) | |
H8A | 0.497589 | 0.453920 | 0.216316 | 0.037* | |
C9 | 0.49282 (11) | 0.41954 (16) | 0.29999 (5) | 0.0248 (3) | |
H9A | 0.413361 | 0.469673 | 0.305235 | 0.030* | |
C10 | 0.55839 (10) | 0.35729 (14) | 0.34528 (4) | 0.0194 (3) | |
C11 | 0.41033 (11) | 0.19854 (17) | 0.40406 (4) | 0.0246 (3) | |
C12 | 0.46253 (12) | 0.01786 (16) | 0.40624 (5) | 0.0286 (3) | |
H12A | 0.402026 | −0.065651 | 0.391528 | 0.043* | |
H12B | 0.481906 | −0.012546 | 0.444707 | 0.043* | |
H12C | 0.538021 | 0.012847 | 0.383922 | 0.043* |
U11 | U22 | U33 | U12 | U13 | U23 | |
O1 | 0.0209 (4) | 0.0274 (5) | 0.0270 (4) | 0.0081 (4) | −0.0010 (3) | −0.0028 (3) |
O2 | 0.0353 (5) | 0.0279 (5) | 0.0180 (4) | −0.0033 (4) | 0.0008 (3) | 0.0007 (3) |
O3 | 0.0209 (5) | 0.0464 (6) | 0.0476 (6) | −0.0060 (4) | 0.0021 (4) | 0.0026 (4) |
C1 | 0.0189 (5) | 0.0200 (6) | 0.0208 (6) | 0.0022 (4) | 0.0004 (4) | −0.0005 (4) |
C2 | 0.0230 (6) | 0.0207 (5) | 0.0192 (5) | 0.0001 (4) | −0.0007 (4) | 0.0001 (4) |
C3 | 0.0239 (6) | 0.0238 (6) | 0.0287 (6) | 0.0040 (5) | −0.0063 (5) | 0.0010 (5) |
C4 | 0.0197 (5) | 0.0221 (6) | 0.0342 (6) | 0.0041 (5) | −0.0001 (5) | −0.0009 (5) |
C5 | 0.0222 (6) | 0.0171 (5) | 0.0258 (6) | −0.0023 (4) | 0.0026 (4) | −0.0019 (4) |
C6 | 0.0271 (6) | 0.0262 (6) | 0.0316 (6) | −0.0028 (5) | 0.0089 (5) | −0.0049 (5) |
C7 | 0.0383 (7) | 0.0364 (7) | 0.0230 (6) | −0.0114 (6) | 0.0086 (5) | −0.0031 (5) |
C8 | 0.0348 (7) | 0.0368 (7) | 0.0212 (6) | −0.0089 (6) | −0.0027 (5) | 0.0040 (5) |
C9 | 0.0234 (6) | 0.0270 (6) | 0.0242 (6) | −0.0039 (5) | −0.0017 (4) | 0.0021 (5) |
C10 | 0.0204 (5) | 0.0170 (5) | 0.0207 (6) | −0.0034 (4) | 0.0007 (4) | −0.0005 (4) |
C11 | 0.0240 (6) | 0.0327 (7) | 0.0172 (5) | −0.0052 (5) | 0.0009 (4) | 0.0013 (5) |
C12 | 0.0352 (7) | 0.0260 (6) | 0.0246 (6) | −0.0093 (5) | −0.0022 (5) | 0.0012 (5) |
O1—C1 | 1.4250 (13) | C5—C6 | 1.3949 (17) |
O1—H1O | 0.85 (2) | C5—C10 | 1.4038 (16) |
O2—C2 | 1.4258 (14) | C6—C7 | 1.3878 (19) |
O2—H2O | 0.87 (2) | C6—H6A | 0.9500 |
O3—C11 | 1.2157 (15) | C7—C8 | 1.3834 (19) |
C1—C10 | 1.5287 (14) | C7—H7A | 0.9500 |
C1—C2 | 1.5387 (15) | C8—C9 | 1.3898 (17) |
C1—C11 | 1.5477 (16) | C8—H8A | 0.9500 |
C2—C3 | 1.4979 (16) | C9—C10 | 1.3875 (16) |
C2—H2A | 1.0000 | C9—H9A | 0.9500 |
C3—C4 | 1.3273 (18) | C11—C12 | 1.4890 (18) |
C3—H3A | 0.9500 | C12—H12A | 0.9800 |
C4—C5 | 1.4661 (17) | C12—H12B | 0.9800 |
C4—H4A | 0.9500 | C12—H12C | 0.9800 |
C1—O1—H1O | 109.2 (14) | C7—C6—H6A | 119.6 |
C2—O2—H2O | 107.7 (12) | C5—C6—H6A | 119.6 |
O1—C1—C10 | 110.42 (9) | C8—C7—C6 | 119.78 (11) |
O1—C1—C2 | 106.85 (9) | C8—C7—H7A | 120.1 |
C10—C1—C2 | 113.59 (9) | C6—C7—H7A | 120.1 |
O1—C1—C11 | 108.58 (9) | C7—C8—C9 | 120.04 (11) |
C10—C1—C11 | 106.15 (9) | C7—C8—H8A | 120.0 |
C2—C1—C11 | 111.19 (9) | C9—C8—H8A | 120.0 |
O2—C2—C3 | 112.29 (9) | C10—C9—C8 | 120.51 (11) |
O2—C2—C1 | 107.09 (9) | C10—C9—H9A | 119.7 |
C3—C2—C1 | 114.66 (9) | C8—C9—H9A | 119.7 |
O2—C2—H2A | 107.5 | C9—C10—C5 | 119.81 (10) |
C3—C2—H2A | 107.5 | C9—C10—C1 | 119.68 (10) |
C1—C2—H2A | 107.5 | C5—C10—C1 | 120.41 (10) |
C4—C3—C2 | 122.89 (11) | O3—C11—C12 | 122.53 (12) |
C4—C3—H3A | 118.6 | O3—C11—C1 | 117.90 (12) |
C2—C3—H3A | 118.6 | C12—C11—C1 | 119.54 (10) |
C3—C4—C5 | 121.86 (11) | C11—C12—H12A | 109.5 |
C3—C4—H4A | 119.1 | C11—C12—H12B | 109.5 |
C5—C4—H4A | 119.1 | H12A—C12—H12B | 109.5 |
C6—C5—C10 | 118.94 (11) | C11—C12—H12C | 109.5 |
C6—C5—C4 | 121.28 (11) | H12A—C12—H12C | 109.5 |
C10—C5—C4 | 119.76 (10) | H12B—C12—H12C | 109.5 |
C7—C6—C5 | 120.88 (11) | ||
O1—C1—C2—O2 | 82.61 (10) | C8—C9—C10—C1 | −175.77 (11) |
C10—C1—C2—O2 | −155.38 (9) | C6—C5—C10—C9 | −1.80 (16) |
C11—C1—C2—O2 | −35.72 (12) | C4—C5—C10—C9 | 176.51 (11) |
O1—C1—C2—C3 | −152.09 (9) | C6—C5—C10—C1 | 174.58 (10) |
C10—C1—C2—C3 | −30.08 (13) | C4—C5—C10—C1 | −7.11 (15) |
C11—C1—C2—C3 | 89.58 (11) | O1—C1—C10—C9 | −39.09 (14) |
O2—C2—C3—C4 | 143.39 (11) | C2—C1—C10—C9 | −159.09 (10) |
C1—C2—C3—C4 | 20.86 (16) | C11—C1—C10—C9 | 78.42 (12) |
C2—C3—C4—C5 | −2.66 (18) | O1—C1—C10—C5 | 144.53 (10) |
C3—C4—C5—C6 | 173.34 (11) | C2—C1—C10—C5 | 24.52 (14) |
C3—C4—C5—C10 | −4.93 (17) | C11—C1—C10—C5 | −97.96 (11) |
C10—C5—C6—C7 | 1.26 (17) | O1—C1—C11—O3 | 11.68 (13) |
C4—C5—C6—C7 | −177.03 (11) | C10—C1—C11—O3 | −107.04 (12) |
C5—C6—C7—C8 | 0.46 (19) | C2—C1—C11—O3 | 128.96 (11) |
C6—C7—C8—C9 | −1.64 (19) | O1—C1—C11—C12 | −170.17 (10) |
C7—C8—C9—C10 | 1.10 (18) | C10—C1—C11—C12 | 71.11 (12) |
C8—C9—C10—C5 | 0.64 (17) | C2—C1—C11—C12 | −52.88 (13) |
D—H···A | D—H | H···A | D···A | D—H···A |
O1—H1O···O3 | 0.85 (2) | 2.08 (2) | 2.5970 (13) | 118.2 (17) |
O1—H1O···O3i | 0.85 (2) | 2.44 (2) | 2.9568 (13) | 119.8 (17) |
O2—H2O···O1ii | 0.87 (2) | 1.92 (2) | 2.7825 (12) | 172.5 (16) |
Symmetry codes: (i) −x+1/2, y+1/2, z; (ii) −x+1, −y+1, −z+1. |
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