Catalytic asymmetric conjugate addition of alpha-cyanoketones for the construction of a quaternary stereogenic center.
Kawato, Yuji; Takahashi, Noriko; Kumagai, Naoya; Shibasaki, Masakatsu; Organic letters 12 (2010) 1484–1487; doi:10.1021/ol100183s

data_1502885
_publ_section_title
;
 Catalytic asymmetric conjugate addition of alpha-cyanoketones for the
 construction of a quaternary stereogenic center.
;
_journal_issue                   7
_journal_name_full               'Organic letters'
_journal_page_first              1484
_journal_page_last               1487
_journal_paper_doi               10.1021/ol100183s
_journal_volume                  12
_journal_year                    2010
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C23 H24 Br N O2 '
_chemical_formula_sum            'C23 H24 Br N O2'
_chemical_formula_weight         426.35
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      19
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_cell_angle_alpha                90.0000
_cell_angle_beta                 90.0000
_cell_angle_gamma                90.0000
_cell_formula_units_Z            4
_cell_length_a                   5.91964(11)
_cell_length_b                   8.88008(16)
_cell_length_c                   37.613(3)
_cell_measurement_reflns_used    21678
_cell_measurement_temperature    153.1
_cell_measurement_theta_max      68.3
_cell_measurement_theta_min      4.7
_cell_volume                     1977.20(17)
_computing_cell_refinement       'PROCESS-AUTO (Rigaku, 1998)'
_computing_data_collection       'PROCESS-AUTO (Rigaku, 1998)'
_computing_data_reduction        'CrystalStructure (Rigaku & RAC 2007)'
_computing_molecular_graphics    'ORTEP (Johnson, 1976)'
_computing_publication_material  'CrystalStructure (Rigaku & RAC 2007)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      153.1
_diffrn_detector_area_resol_mean 10.00
_diffrn_measured_fraction_theta_full 0.986
_diffrn_measured_fraction_theta_max 0.986
_diffrn_measurement_device_type  'Rigaku RAXIS-RAPID'
_diffrn_measurement_method       \w
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54187
_diffrn_reflns_av_R_equivalents  0.027
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       45
_diffrn_reflns_limit_l_min       -45
_diffrn_reflns_number            21843
_diffrn_reflns_theta_full        68.17
_diffrn_reflns_theta_max         68.17
_exptl_absorpt_coefficient_mu    2.969
_exptl_absorpt_correction_T_max  0.979
_exptl_absorpt_correction_T_min  0.643
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
    Higashi, T. (1995). Program for Absorption Correction.
    Rigaku Corporation, Tokyo, Japan.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.432
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             880.00
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.01
_refine_diff_density_max         0.34
_refine_diff_density_min         -0.20
_refine_ls_abs_structure_details
'Flack, H. D. (1983), Acta Cryst. A39, 876-881.  1458 Friedel Pairs'
_refine_ls_abs_structure_Flack   -0.018(13)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.049
_refine_ls_hydrogen_treatment    constr
_refine_ls_number_parameters     246
_refine_ls_number_reflns         3567
_refine_ls_R_factor_gt           0.0251
_refine_ls_shift/su_max          0.0020
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.0380P)^2^+0.3414P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.0617
_reflns_number_gt                3466
_reflns_number_total             3567
_reflns_threshold_expression     F^2^>2.0\s(F^2^)
_cod_data_source_file            ol100183s_si_002.cif
_cod_data_source_block           '_100118'
_cod_original_cell_volume        1977.19(15)
_cod_original_formula_sum        'C23 H24 Br N O2 '
_cod_database_code               1502885