Rhodium(I)-catalyzed asymmetric carbene insertion into B-H bonds: highly enantioselective access to functionalized organoboranes.
Chen, Diao; Zhang, Xu; Qi, Wei-Yi; Xu, Bin; Xu, Ming-Hua; Journal of the American Chemical Society 137 (2015) 5268–5271; doi:10.1021/jacs.5b00892

data_4129347
_publ_section_title
;
 Rhodium(I)-catalyzed asymmetric carbene insertion into B-H bonds: highly
 enantioselective access to functionalized organoboranes.
;
_journal_issue                   16
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              5268
_journal_page_last               5271
_journal_paper_doi               10.1021/jacs.5b00892
_journal_volume                  137
_journal_year                    2015
_chemical_absolute_configuration R
_chemical_formula_sum            'C17 H27 B Br N O2'
_chemical_formula_weight         368.11
_chemical_name_common            20120034
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.7398(8)
_cell_length_b                   12.4581(9)
_cell_length_c                   14.3472(13)
_cell_measurement_reflns_used    6169
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      54.87
_cell_measurement_theta_min      4.50
_cell_volume                     1919.6(3)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0646
_diffrn_reflns_av_sigmaI/netI    0.1261
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            9921
_diffrn_reflns_theta_full        27.51
_diffrn_reflns_theta_max         27.51
_diffrn_reflns_theta_min         2.17
_exptl_absorpt_coefficient_mu    2.147
_exptl_absorpt_correction_T_max  0.9007
_exptl_absorpt_correction_T_min  0.5666
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.274
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             768
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.296
_refine_diff_density_min         -0.245
_refine_diff_density_rms         0.060
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.07(2)
_refine_ls_extinction_coef       0.0043(5)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.985
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     203
_refine_ls_number_reflns         4374
_refine_ls_number_restraints     6
_refine_ls_restrained_S_all      0.993
_refine_ls_R_factor_all          0.1904
_refine_ls_R_factor_gt           0.0658
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0834P)^2^+0.0389P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1508
_refine_ls_wR_factor_ref         0.2006
_reflns_number_gt                1715
_reflns_number_total             4374
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja5b00892_si_002.cif
_cod_data_source_block           H:\Report\2014\2014389\mo_2014389.CIF
_cod_original_sg_symbol_H-M      P212121
_cod_database_code               4129347