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The title compound is a demonstration of hydro­boration of ynamines with borandiol ester. The bond lengths of the resulting push–pull olefin are discussed.

Supporting information

cif

Crystallographic Information File (CIF) https://doi.org/10.1107/S2056989020005289/lh5953sup1.cif
Contains datablock I

hkl

Structure factor file (CIF format) https://doi.org/10.1107/S2056989020005289/lh5953Isup2.hkl
Contains datablock I

cml

Chemical Markup Language (CML) file https://doi.org/10.1107/S2056989020005289/lh5953Isup3.cml
Supplementary material

CCDC reference: 1997061

Key indicators

  • Single-crystal X-ray study
  • T = 100 K
  • Mean [sigma](C-C) = 0.004 Å
  • R factor = 0.039
  • wR factor = 0.086
  • Data-to-parameter ratio = 17.9

checkCIF/PLATON results

No syntax errors found



Alert level C STRVA01_ALERT_4_C Flack parameter is too small From the CIF: _refine_ls_abs_structure_Flack -0.700 From the CIF: _refine_ls_abs_structure_Flack_su 0.400 PLAT910_ALERT_3_C Missing # of FCF Reflection(s) Below Theta(Min). 6 Note
Alert level G PLAT032_ALERT_4_G Std. Uncertainty on Flack Parameter Value High . 0.400 Report PLAT395_ALERT_2_G Deviating X-O-Y Angle From 120 for O1A 105.5 Degree PLAT395_ALERT_2_G Deviating X-O-Y Angle From 120 for O2A 105.5 Degree PLAT395_ALERT_2_G Deviating X-O-Y Angle From 120 for O1B 105.3 Degree PLAT395_ALERT_2_G Deviating X-O-Y Angle From 120 for O2B 105.4 Degree PLAT720_ALERT_4_G Number of Unusual/Non-Standard Labels .......... 12 Note PLAT912_ALERT_4_G Missing # of FCF Reflections Above STh/L= 0.600 26 Note PLAT933_ALERT_2_G Number of OMIT Records in Embedded .res File ... 8 Note PLAT978_ALERT_2_G Number C-C Bonds with Positive Residual Density. 9 Info
0 ALERT level A = Most likely a serious problem - resolve or explain 0 ALERT level B = A potentially serious problem, consider carefully 2 ALERT level C = Check. Ensure it is not caused by an omission or oversight 9 ALERT level G = General information/check it is not something unexpected 0 ALERT type 1 CIF construction/syntax error, inconsistent or missing data 6 ALERT type 2 Indicator that the structure model may be wrong or deficient 1 ALERT type 3 Indicator that the structure quality may be low 4 ALERT type 4 Improvement, methodology, query or suggestion 0 ALERT type 5 Informative message, check

Computing details top

Data collection: APEX2 (Bruker, 2015); cell refinement: SAINT (Bruker, 2015); data reduction: SAINT (Bruker, 2015); program(s) used to solve structure: SHELXT (Sheldrick, 2015a); program(s) used to refine structure: SHELXL (Sheldrick, 2015b); molecular graphics: OLEX2 (Dolomanov et al., 2009); software used to prepare material for publication: OLEX2 (Dolomanov et al., 2009).

N-[(Z)-2-(2H-1,3,2-Benzodioxaborol-2-yl)-2-phenylethenyl]-N-(propan-2-yl)aniline top
Crystal data top
C23H22BNO2Dx = 1.236 Mg m3
Mr = 355.22Mo Kα radiation, λ = 0.71073 Å
Orthorhombic, Pca21Cell parameters from 9981 reflections
a = 17.8540 (11) Åθ = 2.5–26.8°
b = 11.5361 (6) ŵ = 0.08 mm1
c = 18.5366 (12) ÅT = 100 K
V = 3817.9 (4) Å3Plate, clear light yellow
Z = 80.38 × 0.2 × 0.07 mm
F(000) = 1504
Data collection top
Bruker–Nonius Kappa APEXII
diffractometer
8781 independent reflections
Radiation source: sealed tube7379 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.047
Detector resolution: 8.33 pixels mm-1θmax = 27.6°, θmin = 2.8°
ω and φ scansh = 2323
Absorption correction: multi-scan
(SADABS; Bruker, 2015)
k = 1414
Tmin = 0.703, Tmax = 0.733l = 2424
60829 measured reflections
Refinement top
Refinement on F2Hydrogen site location: inferred from neighbouring sites
Least-squares matrix: fullH-atom parameters constrained
R[F2 > 2σ(F2)] = 0.039 w = 1/[σ2(Fo2) + (0.0401P)2 + 0.7053P]
where P = (Fo2 + 2Fc2)/3
wR(F2) = 0.086(Δ/σ)max < 0.001
S = 1.03Δρmax = 0.25 e Å3
8781 reflectionsΔρmin = 0.24 e Å3
491 parametersAbsolute structure: Flack x determined using 3185 quotients [(I+)-(I-)]/[(I+)+(I-)] (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
1 restraintAbsolute structure parameter: 0.7 (4)
Primary atom site location: structure-invariant direct methods
Special details top

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. 8 reflections were omitted (some are equivalents). These were checked visually and are all results of high background around the beamstop (beginning ice formation or crystalline powder covering the sample). 0 1 0 is clearly shadowed by the beamstop. Absolute structure is not claimed due to unreliable Flack and Hooft parameters.

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2) top
xyzUiso*/Ueq
O1B0.18188 (9)0.59842 (13)0.60028 (9)0.0155 (4)
O2B0.30086 (9)0.67252 (13)0.61169 (9)0.0158 (4)
N1B0.23745 (11)0.25154 (16)0.65127 (11)0.0159 (4)
C1B0.10503 (15)0.2002 (2)0.62440 (14)0.0210 (6)
H1BA0.08740.28060.62510.032*
H1BB0.06420.14850.63900.032*
H1BC0.12150.18000.57560.032*
C2B0.14877 (15)0.2209 (2)0.75303 (14)0.0205 (6)
H2BA0.19280.21520.78440.031*
H2BB0.10960.16860.77070.031*
H2BC0.13010.30080.75330.031*
C3B0.17032 (14)0.1869 (2)0.67659 (13)0.0160 (5)
H3B0.18400.10280.67760.019*
C4B0.30570 (13)0.18933 (19)0.64199 (14)0.0147 (5)
C5B0.32986 (14)0.1121 (2)0.69452 (14)0.0189 (5)
H5B0.30090.10070.73690.023*
C6B0.39606 (14)0.0518 (2)0.68521 (16)0.0230 (6)
H6B0.41260.00060.72140.028*
C7B0.43822 (15)0.0673 (2)0.62365 (16)0.0275 (6)
H7B0.48410.02670.61770.033*
C8B0.41341 (15)0.1423 (2)0.57066 (15)0.0238 (6)
H8B0.44200.15220.52790.029*
C9B0.34704 (14)0.2033 (2)0.57938 (14)0.0191 (5)
H9B0.33010.25430.54260.023*
C10B0.23179 (13)0.36795 (19)0.63924 (13)0.0151 (5)
H10B0.18200.39490.63210.018*
C11B0.28538 (13)0.4526 (2)0.63563 (13)0.0156 (5)
C12B0.36555 (13)0.4370 (2)0.65557 (13)0.0142 (5)
C13B0.38562 (14)0.3878 (2)0.72178 (13)0.0172 (5)
H13B0.34760.36300.75410.021*
C14B0.46041 (15)0.3748 (2)0.74087 (14)0.0209 (5)
H14B0.47310.34100.78600.025*
C15B0.51658 (14)0.4110 (2)0.69433 (14)0.0210 (6)
H15B0.56770.40120.70710.025*
C16B0.49740 (14)0.4614 (2)0.62906 (14)0.0188 (5)
H16B0.53560.48690.59720.023*
C17B0.42288 (14)0.4749 (2)0.60995 (14)0.0169 (5)
H17B0.41060.51030.56520.020*
C18B0.18063 (14)0.71629 (19)0.58605 (13)0.0140 (5)
C19B0.12056 (14)0.7829 (2)0.56544 (13)0.0178 (5)
H19B0.07150.75180.56140.021*
C20B0.13606 (15)0.8997 (2)0.55079 (14)0.0198 (5)
H20B0.09660.94920.53560.024*
C21B0.20801 (15)0.9445 (2)0.55794 (13)0.0192 (5)
H21B0.21651.02420.54780.023*
C22B0.26793 (14)0.8754 (2)0.57958 (13)0.0179 (5)
H22B0.31710.90590.58490.022*
C23B0.25211 (13)0.76087 (19)0.59287 (13)0.0151 (5)
B1B0.25681 (15)0.5724 (2)0.61526 (14)0.0149 (6)
O1A0.59813 (9)0.09865 (13)0.40292 (10)0.0176 (4)
O2A0.71747 (9)0.17253 (13)0.39845 (9)0.0174 (4)
N1A0.65302 (11)0.24387 (17)0.34366 (11)0.0161 (4)
C1A0.52189 (14)0.2942 (2)0.37802 (15)0.0228 (6)
H1AA0.54160.31040.42630.034*
H1AB0.50270.21460.37640.034*
H1AC0.48130.34850.36710.034*
C2A0.58421 (14)0.3081 (2)0.32256 (14)0.0177 (5)
H2A0.59760.39230.32130.021*
C3A0.55869 (14)0.2754 (2)0.24731 (15)0.0227 (6)
H3AA0.54070.19520.24730.034*
H3AB0.60080.28290.21370.034*
H3AC0.51800.32720.23230.034*
C4A0.72025 (13)0.3083 (2)0.35237 (13)0.0139 (5)
C5A0.76423 (13)0.2910 (2)0.41332 (13)0.0150 (5)
H5A0.74960.23580.44870.018*
C6A0.82952 (14)0.3543 (2)0.42245 (14)0.0199 (5)
H6A0.85960.34230.46400.024*
C7A0.85112 (15)0.4353 (2)0.37098 (15)0.0233 (6)
H7A0.89640.47760.37680.028*
C8A0.80630 (14)0.4541 (2)0.31124 (16)0.0227 (6)
H8A0.82040.51050.27650.027*
C9A0.74113 (14)0.3912 (2)0.30178 (14)0.0182 (5)
H9A0.71060.40470.26070.022*
C10A0.64818 (14)0.1276 (2)0.35658 (13)0.0157 (5)
H10A0.59840.10010.36240.019*
C11A0.70180 (13)0.0433 (2)0.36266 (12)0.0136 (5)
C12A0.78275 (13)0.0582 (2)0.34518 (13)0.0143 (5)
C13A0.83799 (13)0.0207 (2)0.39292 (13)0.0159 (5)
H13A0.82390.01540.43690.019*
C14A0.91359 (14)0.0353 (2)0.37700 (15)0.0184 (5)
H14A0.95050.01040.41050.022*
C15A0.93517 (15)0.0860 (2)0.31277 (14)0.0209 (6)
H15A0.98680.09670.30210.025*
C16A0.88076 (14)0.1212 (2)0.26390 (14)0.0209 (6)
H16A0.89520.15490.21930.025*
C17A0.80555 (14)0.1074 (2)0.27994 (13)0.0166 (5)
H17A0.76890.13170.24600.020*
C18A0.59638 (14)0.2147 (2)0.42114 (13)0.0155 (5)
C19A0.53579 (14)0.2820 (2)0.43916 (14)0.0196 (5)
H19A0.48640.25140.44020.024*
C20A0.55064 (15)0.3974 (2)0.45574 (14)0.0212 (6)
H20A0.51020.44690.46850.025*
C21A0.62240 (15)0.4420 (2)0.45425 (14)0.0221 (6)
H21A0.63020.52120.46610.027*
C22A0.68384 (15)0.3727 (2)0.43561 (14)0.0215 (6)
H22A0.73350.40240.43460.026*
C23A0.66814 (14)0.2591 (2)0.41882 (13)0.0159 (5)
B1A0.67343 (15)0.0740 (2)0.38806 (15)0.0149 (5)
Atomic displacement parameters (Å2) top
U11U22U33U12U13U23
O1B0.0139 (8)0.0119 (8)0.0206 (9)0.0005 (7)0.0001 (7)0.0023 (7)
O2B0.0137 (8)0.0144 (8)0.0194 (9)0.0010 (6)0.0018 (7)0.0016 (7)
N1B0.0115 (10)0.0142 (9)0.0218 (11)0.0004 (8)0.0030 (8)0.0028 (8)
C1B0.0183 (13)0.0203 (12)0.0245 (15)0.0017 (10)0.0016 (11)0.0009 (11)
C2B0.0194 (14)0.0215 (13)0.0206 (13)0.0021 (11)0.0031 (11)0.0012 (10)
C3B0.0142 (13)0.0135 (11)0.0205 (13)0.0017 (10)0.0030 (10)0.0013 (10)
C4B0.0115 (12)0.0112 (10)0.0213 (13)0.0010 (9)0.0012 (10)0.0023 (10)
C5B0.0187 (13)0.0162 (12)0.0218 (14)0.0021 (10)0.0029 (10)0.0006 (10)
C6B0.0174 (13)0.0157 (12)0.0360 (16)0.0007 (10)0.0082 (12)0.0023 (11)
C7B0.0144 (13)0.0196 (12)0.0487 (19)0.0027 (11)0.0015 (13)0.0046 (12)
C8B0.0196 (14)0.0191 (13)0.0328 (16)0.0020 (11)0.0108 (11)0.0065 (11)
C9B0.0173 (13)0.0168 (12)0.0232 (13)0.0015 (10)0.0015 (10)0.0014 (10)
C10B0.0132 (12)0.0174 (11)0.0147 (11)0.0022 (9)0.0007 (9)0.0013 (10)
C11B0.0146 (12)0.0169 (11)0.0152 (12)0.0014 (10)0.0027 (10)0.0006 (10)
C12B0.0133 (12)0.0120 (11)0.0173 (12)0.0018 (9)0.0002 (10)0.0012 (10)
C13B0.0182 (13)0.0161 (12)0.0172 (13)0.0000 (10)0.0021 (10)0.0014 (10)
C14B0.0217 (14)0.0217 (13)0.0195 (13)0.0023 (11)0.0053 (11)0.0007 (11)
C15B0.0143 (13)0.0208 (12)0.0281 (15)0.0023 (10)0.0057 (11)0.0022 (11)
C16B0.0144 (12)0.0178 (12)0.0244 (14)0.0007 (10)0.0032 (10)0.0005 (10)
C17B0.0177 (12)0.0163 (11)0.0169 (12)0.0007 (10)0.0008 (10)0.0008 (10)
C18B0.0171 (12)0.0124 (11)0.0124 (11)0.0024 (10)0.0031 (9)0.0000 (9)
C19B0.0140 (13)0.0202 (13)0.0191 (13)0.0031 (10)0.0011 (10)0.0001 (10)
C20B0.0236 (14)0.0186 (12)0.0171 (13)0.0061 (11)0.0014 (11)0.0014 (10)
C21B0.0277 (14)0.0125 (11)0.0172 (13)0.0003 (11)0.0044 (11)0.0002 (10)
C22B0.0217 (13)0.0174 (11)0.0147 (12)0.0032 (10)0.0000 (10)0.0025 (9)
C23B0.0158 (12)0.0167 (11)0.0127 (11)0.0028 (10)0.0025 (9)0.0023 (10)
B1B0.0128 (13)0.0191 (13)0.0129 (13)0.0004 (11)0.0016 (11)0.0006 (11)
O1A0.0134 (9)0.0138 (8)0.0258 (10)0.0012 (7)0.0003 (7)0.0027 (7)
O2A0.0139 (9)0.0146 (8)0.0237 (10)0.0005 (7)0.0028 (7)0.0023 (7)
N1A0.0116 (10)0.0147 (10)0.0220 (11)0.0002 (8)0.0036 (8)0.0030 (8)
C1A0.0161 (13)0.0221 (13)0.0304 (15)0.0042 (11)0.0001 (11)0.0005 (12)
C2A0.0128 (12)0.0150 (11)0.0251 (14)0.0015 (10)0.0032 (10)0.0033 (10)
C3A0.0154 (14)0.0273 (14)0.0254 (14)0.0027 (11)0.0061 (11)0.0047 (11)
C4A0.0121 (12)0.0119 (11)0.0175 (12)0.0009 (9)0.0005 (10)0.0018 (9)
C5A0.0157 (12)0.0142 (10)0.0151 (12)0.0010 (9)0.0010 (10)0.0004 (9)
C6A0.0160 (12)0.0214 (12)0.0223 (14)0.0021 (10)0.0038 (10)0.0035 (11)
C7A0.0155 (13)0.0179 (12)0.0366 (16)0.0054 (11)0.0001 (12)0.0006 (11)
C8A0.0198 (14)0.0182 (12)0.0300 (15)0.0014 (11)0.0034 (11)0.0066 (11)
C9A0.0175 (13)0.0173 (12)0.0198 (13)0.0018 (10)0.0009 (10)0.0033 (10)
C10A0.0129 (12)0.0171 (12)0.0172 (12)0.0036 (10)0.0012 (9)0.0010 (10)
C11A0.0125 (12)0.0146 (11)0.0138 (12)0.0000 (9)0.0014 (9)0.0005 (9)
C12A0.0143 (12)0.0123 (11)0.0164 (12)0.0009 (9)0.0007 (10)0.0042 (10)
C13A0.0162 (12)0.0143 (11)0.0170 (13)0.0002 (10)0.0011 (10)0.0002 (10)
C14A0.0140 (12)0.0166 (12)0.0247 (14)0.0000 (10)0.0032 (10)0.0033 (10)
C15A0.0152 (13)0.0220 (12)0.0255 (14)0.0017 (10)0.0056 (11)0.0028 (11)
C16A0.0229 (14)0.0215 (13)0.0182 (13)0.0034 (11)0.0064 (11)0.0000 (11)
C17A0.0165 (12)0.0167 (12)0.0166 (12)0.0003 (10)0.0014 (10)0.0008 (10)
C18A0.0185 (13)0.0154 (11)0.0127 (12)0.0018 (10)0.0012 (9)0.0004 (9)
C19A0.0151 (13)0.0228 (13)0.0211 (13)0.0022 (11)0.0002 (10)0.0028 (11)
C20A0.0236 (14)0.0209 (13)0.0190 (13)0.0103 (11)0.0021 (11)0.0036 (10)
C21A0.0294 (15)0.0155 (12)0.0215 (13)0.0025 (11)0.0005 (11)0.0047 (10)
C22A0.0216 (14)0.0191 (12)0.0237 (14)0.0030 (11)0.0002 (11)0.0019 (11)
C23A0.0137 (12)0.0178 (12)0.0164 (12)0.0037 (10)0.0009 (10)0.0009 (10)
B1A0.0126 (13)0.0177 (13)0.0143 (13)0.0006 (11)0.0002 (11)0.0026 (11)
Geometric parameters (Å, º) top
O1B—C18B1.385 (3)O1A—C18A1.382 (3)
O1B—B1B1.399 (3)O1A—B1A1.402 (3)
O2B—C23B1.385 (3)O2A—C23A1.384 (3)
O2B—B1B1.398 (3)O2A—B1A1.396 (3)
N1B—C3B1.488 (3)N1A—C2A1.487 (3)
N1B—C4B1.425 (3)N1A—C4A1.421 (3)
N1B—C10B1.365 (3)N1A—C10A1.365 (3)
C1B—H1BA0.9800C1A—H1AA0.9800
C1B—H1BB0.9800C1A—H1AB0.9800
C1B—H1BC0.9800C1A—H1AC0.9800
C1B—C3B1.523 (4)C1A—C2A1.523 (4)
C2B—H2BA0.9800C2A—H2A1.0000
C2B—H2BB0.9800C2A—C3A1.515 (4)
C2B—H2BC0.9800C3A—H3AA0.9800
C2B—C3B1.520 (3)C3A—H3AB0.9800
C3B—H3B1.0000C3A—H3AC0.9800
C4B—C5B1.389 (3)C4A—C5A1.390 (3)
C4B—C9B1.385 (4)C4A—C9A1.390 (3)
C5B—H5B0.9500C5A—H5A0.9500
C5B—C6B1.382 (3)C5A—C6A1.386 (3)
C6B—H6B0.9500C6A—H6A0.9500
C6B—C7B1.379 (4)C6A—C7A1.390 (4)
C7B—H7B0.9500C7A—H7A0.9500
C7B—C8B1.382 (4)C7A—C8A1.383 (4)
C8B—H8B0.9500C8A—H8A0.9500
C8B—C9B1.387 (4)C8A—C9A1.382 (4)
C9B—H9B0.9500C9A—H9A0.9500
C10B—H10B0.9500C10A—H10A0.9500
C10B—C11B1.369 (3)C10A—C11A1.370 (3)
C11B—C12B1.489 (3)C11A—C12A1.491 (3)
C11B—B1B1.521 (4)C11A—B1A1.519 (3)
C12B—C13B1.399 (3)C12A—C13A1.394 (3)
C12B—C17B1.398 (3)C12A—C17A1.397 (3)
C13B—H13B0.9500C13A—H13A0.9500
C13B—C14B1.389 (4)C13A—C14A1.392 (3)
C14B—H14B0.9500C14A—H14A0.9500
C14B—C15B1.387 (4)C14A—C15A1.381 (4)
C15B—H15B0.9500C15A—H15A0.9500
C15B—C16B1.385 (4)C15A—C16A1.389 (4)
C16B—H16B0.9500C16A—H16A0.9500
C16B—C17B1.386 (3)C16A—C17A1.385 (3)
C17B—H17B0.9500C17A—H17A0.9500
C18B—C19B1.374 (3)C18A—C19A1.372 (3)
C18B—C23B1.382 (3)C18A—C23A1.381 (3)
C19B—H19B0.9500C19A—H19A0.9500
C19B—C20B1.401 (3)C20A—H20A0.9500
C20B—H20B0.9500C20A—C21A1.381 (4)
C20B—C21B1.391 (4)C21A—H21A0.9500
C21B—H21B0.9500C21A—C22A1.401 (4)
C21B—C22B1.393 (4)C22A—H22A0.9500
C22B—H22B0.9500C22A—C23A1.375 (3)
C22B—C23B1.374 (3)
C18B—O1B—B1B105.28 (18)C18A—O1A—B1A105.46 (18)
C23B—O2B—B1B105.43 (18)C23A—O2A—B1A105.50 (18)
C4B—N1B—C3B118.34 (18)C4A—N1A—C2A117.83 (18)
C10B—N1B—C3B119.02 (19)C10A—N1A—C2A118.9 (2)
C10B—N1B—C4B122.6 (2)C10A—N1A—C4A123.2 (2)
H1BA—C1B—H1BB109.5H1AA—C1A—H1AB109.5
H1BA—C1B—H1BC109.5H1AA—C1A—H1AC109.5
H1BB—C1B—H1BC109.5H1AB—C1A—H1AC109.5
C3B—C1B—H1BA109.5C2A—C1A—H1AA109.5
C3B—C1B—H1BB109.5C2A—C1A—H1AB109.5
C3B—C1B—H1BC109.5C2A—C1A—H1AC109.5
H2BA—C2B—H2BB109.5N1A—C2A—C1A111.9 (2)
H2BA—C2B—H2BC109.5N1A—C2A—H2A107.0
H2BB—C2B—H2BC109.5N1A—C2A—C3A111.5 (2)
C3B—C2B—H2BA109.5C1A—C2A—H2A107.0
C3B—C2B—H2BB109.5C3A—C2A—C1A112.1 (2)
C3B—C2B—H2BC109.5C3A—C2A—H2A107.0
N1B—C3B—C1B111.5 (2)C2A—C3A—H3AA109.5
N1B—C3B—C2B111.6 (2)C2A—C3A—H3AB109.5
N1B—C3B—H3B107.2C2A—C3A—H3AC109.5
C1B—C3B—H3B107.2H3AA—C3A—H3AB109.5
C2B—C3B—C1B111.9 (2)H3AA—C3A—H3AC109.5
C2B—C3B—H3B107.2H3AB—C3A—H3AC109.5
C5B—C4B—N1B120.3 (2)C5A—C4A—N1A119.6 (2)
C9B—C4B—N1B119.9 (2)C5A—C4A—C9A119.7 (2)
C9B—C4B—C5B119.8 (2)C9A—C4A—N1A120.6 (2)
C4B—C5B—H5B120.0C4A—C5A—H5A120.1
C6B—C5B—C4B120.1 (2)C6A—C5A—C4A119.9 (2)
C6B—C5B—H5B120.0C6A—C5A—H5A120.1
C5B—C6B—H6B119.8C5A—C6A—H6A119.9
C7B—C6B—C5B120.3 (2)C5A—C6A—C7A120.3 (2)
C7B—C6B—H6B119.8C7A—C6A—H6A119.9
C6B—C7B—H7B120.2C6A—C7A—H7A120.2
C6B—C7B—C8B119.7 (2)C8A—C7A—C6A119.6 (2)
C8B—C7B—H7B120.2C8A—C7A—H7A120.2
C7B—C8B—H8B119.7C7A—C8A—H8A119.8
C7B—C8B—C9B120.5 (2)C9A—C8A—C7A120.4 (2)
C9B—C8B—H8B119.7C9A—C8A—H8A119.8
C4B—C9B—C8B119.6 (2)C4A—C9A—H9A120.0
C4B—C9B—H9B120.2C8A—C9A—C4A120.1 (2)
C8B—C9B—H9B120.2C8A—C9A—H9A120.0
N1B—C10B—H10B114.4N1A—C10A—H10A114.0
N1B—C10B—C11B131.2 (2)N1A—C10A—C11A131.9 (2)
C11B—C10B—H10B114.4C11A—C10A—H10A114.0
C10B—C11B—C12B125.0 (2)C10A—C11A—C12A125.3 (2)
C10B—C11B—B1B115.2 (2)C10A—C11A—B1A115.1 (2)
C12B—C11B—B1B119.6 (2)C12A—C11A—B1A119.5 (2)
C13B—C12B—C11B120.9 (2)C13A—C12A—C11A120.8 (2)
C17B—C12B—C11B121.1 (2)C13A—C12A—C17A118.0 (2)
C17B—C12B—C13B118.0 (2)C17A—C12A—C11A121.2 (2)
C12B—C13B—H13B119.6C12A—C13A—H13A119.5
C14B—C13B—C12B120.9 (2)C14A—C13A—C12A120.9 (2)
C14B—C13B—H13B119.6C14A—C13A—H13A119.5
C13B—C14B—H14B119.9C13A—C14A—H14A119.8
C15B—C14B—C13B120.3 (2)C15A—C14A—C13A120.3 (2)
C15B—C14B—H14B119.9C15A—C14A—H14A119.8
C14B—C15B—H15B120.3C14A—C15A—H15A120.3
C16B—C15B—C14B119.4 (2)C14A—C15A—C16A119.4 (2)
C16B—C15B—H15B120.3C16A—C15A—H15A120.3
C15B—C16B—H16B119.7C15A—C16A—H16A119.9
C15B—C16B—C17B120.5 (2)C17A—C16A—C15A120.3 (2)
C17B—C16B—H16B119.7C17A—C16A—H16A119.9
C12B—C17B—H17B119.5C12A—C17A—H17A119.5
C16B—C17B—C12B120.9 (2)C16A—C17A—C12A121.0 (2)
C16B—C17B—H17B119.5C16A—C17A—H17A119.5
C19B—C18B—O1B127.9 (2)C19A—C18A—O1A128.7 (2)
C19B—C18B—C23B122.6 (2)C19A—C18A—C23A122.0 (2)
C23B—C18B—O1B109.4 (2)C23A—C18A—O1A109.3 (2)
C18B—C19B—H19B122.0C18A—C19A—H19A121.8
C18B—C19B—C20B115.9 (2)C18A—C19A—C20A116.4 (2)
C20B—C19B—H19B122.0C20A—C19A—H19A121.8
C19B—C20B—H20B119.3C19A—C20A—H20A119.0
C21B—C20B—C19B121.4 (2)C21A—C20A—C19A121.9 (2)
C21B—C20B—H20B119.3C21A—C20A—H20A119.0
C20B—C21B—H21B119.2C20A—C21A—H21A119.4
C20B—C21B—C22B121.6 (2)C20A—C21A—C22A121.3 (2)
C22B—C21B—H21B119.2C22A—C21A—H21A119.4
C21B—C22B—H22B121.8C21A—C22A—H22A122.0
C23B—C22B—C21B116.4 (2)C23A—C22A—C21A116.1 (2)
C23B—C22B—H22B121.8C23A—C22A—H22A122.0
C18B—C23B—O2B109.24 (19)C18A—C23A—O2A109.3 (2)
C22B—C23B—O2B128.6 (2)C22A—C23A—O2A128.3 (2)
C22B—C23B—C18B122.1 (2)C22A—C23A—C18A122.4 (2)
O1B—B1B—C11B124.4 (2)O1A—B1A—C11A124.2 (2)
O2B—B1B—O1B110.6 (2)O2A—B1A—O1A110.4 (2)
O2B—B1B—C11B125.0 (2)O2A—B1A—C11A125.5 (2)
O1B—C18B—C19B—C20B176.7 (2)O1A—C18A—C19A—C20A179.5 (2)
O1B—C18B—C23B—O2B0.0 (3)O1A—C18A—C23A—O2A0.5 (3)
O1B—C18B—C23B—C22B177.9 (2)O1A—C18A—C23A—C22A178.9 (2)
N1B—C4B—C5B—C6B179.9 (2)N1A—C4A—C5A—C6A179.4 (2)
N1B—C4B—C9B—C8B179.9 (2)N1A—C4A—C9A—C8A179.4 (2)
N1B—C10B—C11B—C12B9.7 (4)N1A—C10A—C11A—C12A9.7 (4)
N1B—C10B—C11B—B1B175.5 (2)N1A—C10A—C11A—B1A171.6 (2)
C3B—N1B—C4B—C5B45.6 (3)C2A—N1A—C4A—C5A132.7 (2)
C3B—N1B—C4B—C9B132.5 (2)C2A—N1A—C4A—C9A45.1 (3)
C3B—N1B—C10B—C11B159.6 (3)C2A—N1A—C10A—C11A165.3 (2)
C4B—N1B—C3B—C1B123.7 (2)C4A—N1A—C2A—C1A120.9 (2)
C4B—N1B—C3B—C2B110.3 (2)C4A—N1A—C2A—C3A112.7 (2)
C4B—N1B—C10B—C11B19.1 (4)C4A—N1A—C10A—C11A17.5 (4)
C4B—C5B—C6B—C7B0.4 (4)C4A—C5A—C6A—C7A0.1 (4)
C5B—C4B—C9B—C8B1.8 (4)C5A—C4A—C9A—C8A1.6 (4)
C5B—C6B—C7B—C8B1.0 (4)C5A—C6A—C7A—C8A1.3 (4)
C6B—C7B—C8B—C9B1.0 (4)C6A—C7A—C8A—C9A1.3 (4)
C7B—C8B—C9B—C4B0.5 (4)C7A—C8A—C9A—C4A0.1 (4)
C9B—C4B—C5B—C6B1.8 (4)C9A—C4A—C5A—C6A1.6 (4)
C10B—N1B—C3B—C1B57.5 (3)C10A—N1A—C2A—C1A56.4 (3)
C10B—N1B—C3B—C2B68.4 (3)C10A—N1A—C2A—C3A69.9 (3)
C10B—N1B—C4B—C5B133.1 (2)C10A—N1A—C4A—C5A44.5 (3)
C10B—N1B—C4B—C9B48.8 (3)C10A—N1A—C4A—C9A137.6 (2)
C10B—C11B—C12B—C13B50.5 (3)C10A—C11A—C12A—C13A132.2 (3)
C10B—C11B—C12B—C17B131.9 (3)C10A—C11A—C12A—C17A49.3 (3)
C10B—C11B—B1B—O1B0.5 (4)C10A—C11A—B1A—O1A1.7 (4)
C10B—C11B—B1B—O2B176.9 (2)C10A—C11A—B1A—O2A179.8 (2)
C11B—C12B—C13B—C14B179.0 (2)C11A—C12A—C13A—C14A179.5 (2)
C11B—C12B—C17B—C16B179.3 (2)C11A—C12A—C17A—C16A179.9 (2)
C12B—C11B—B1B—O1B175.6 (2)C12A—C11A—B1A—O1A177.2 (2)
C12B—C11B—B1B—O2B1.7 (4)C12A—C11A—B1A—O2A1.4 (4)
C12B—C13B—C14B—C15B0.2 (4)C12A—C13A—C14A—C15A1.0 (4)
C13B—C12B—C17B—C16B1.6 (3)C13A—C12A—C17A—C16A1.6 (3)
C13B—C14B—C15B—C16B0.8 (4)C13A—C14A—C15A—C16A0.6 (4)
C14B—C15B—C16B—C17B0.5 (4)C14A—C15A—C16A—C17A1.1 (4)
C15B—C16B—C17B—C12B0.6 (4)C15A—C16A—C17A—C12A0.1 (4)
C17B—C12B—C13B—C14B1.3 (3)C17A—C12A—C13A—C14A2.0 (3)
C18B—O1B—B1B—O2B1.1 (3)C18A—O1A—B1A—O2A1.2 (3)
C18B—O1B—B1B—C11B178.7 (2)C18A—O1A—B1A—C11A177.5 (2)
C18B—C19B—C20B—C21B0.9 (4)C18A—C19A—C20A—C21A0.1 (4)
C19B—C18B—C23B—O2B177.8 (2)C19A—C18A—C23A—O2A179.4 (2)
C19B—C18B—C23B—C22B0.1 (4)C19A—C18A—C23A—C22A1.2 (4)
C19B—C20B—C21B—C22B0.3 (4)C19A—C20A—C21A—C22A0.2 (4)
C20B—C21B—C22B—C23B0.5 (4)C20A—C21A—C22A—C23A0.3 (4)
C21B—C22B—C23B—O2B176.8 (2)C21A—C22A—C23A—O2A179.7 (2)
C21B—C22B—C23B—C18B0.7 (4)C21A—C22A—C23A—C18A1.0 (4)
C23B—O2B—B1B—O1B1.1 (3)C23A—O2A—B1A—O1A1.0 (3)
C23B—O2B—B1B—C11B178.7 (2)C23A—O2A—B1A—C11A177.8 (2)
C23B—C18B—C19B—C20B0.7 (4)C23A—C18A—C19A—C20A0.6 (4)
B1B—O1B—C18B—C19B177.0 (2)B1A—O1A—C18A—C19A178.8 (3)
B1B—O1B—C18B—C23B0.6 (3)B1A—O1A—C18A—C23A1.0 (3)
B1B—O2B—C23B—C18B0.7 (3)B1A—O2A—C23A—C18A0.3 (3)
B1B—O2B—C23B—C22B177.1 (2)B1A—O2A—C23A—C22A179.7 (3)
B1B—C11B—C12B—C13B124.1 (3)B1A—C11A—C12A—C13A49.1 (3)
B1B—C11B—C12B—C17B53.5 (3)B1A—C11A—C12A—C17A129.4 (2)
Comparison of bond lengths (in Å) in 1 with those in the similar compounds 25 top
Average distances and standard deviations are given whenever there is more than one molecule in the asymmetric unit. Typical bond lengths for vinylboranes and conjugated enamines were obtained from statistical analysis.
CompoundB—CC—CC—NCCDC
11.521 (3)1.369 (3)1.365 (3)title compound
21.537 (4)1.335 (4)1.394 (3)861787a
31.513 (4)1.380 (3)1.362 (3)1529736
41.491 (7)1.393 (6)1.341 (6)1843575
51.516 (2)1.371 (2)1.350 (2)unpublished
Vinyl boronates1.561 (15)1.341 (12)
Enamines~1.34~ 1.36
Notes: (a) Hatayama & Okuno (2012); (b) Liu et al. (2017); (c) Wang et al. (2018).
 

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