Enantio- and Diastereoselective Michael Reaction of 1,3-Dicarbonyl Compounds to Nitroolefins Catalyzed by a Bifunctional Thiourea
Tomotaka Okino; Yasutaka Hoashi; Tomihiro Furukawa; Xuenong Xu; Yoshiji Takemoto; Journal of the American Chemical Society 127 (2005) 119–125; doi:10.1021/ja044370p

data_4060010
_publ_section_title
;
Enantio- and Diastereoselective Michael Reaction of 1,3-Dicarbonyl
Compounds to Nitroolefins Catalyzed by a Bifunctional Thiourea
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              119
_journal_page_last               125
_journal_paper_doi               10.1021/ja044370p
_journal_volume                  127
_journal_year                    2005
_chemical_formula_moiety         'C20 H18 Br N O5, C H Cl3'
_chemical_formula_sum            'C21 H19 Br Cl3 N O5'
_chemical_formula_weight         551.65
_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_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
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.509(5)
_cell_length_b                   11.225(8)
_cell_length_c                   23.33(1)
_cell_measurement_reflns_used    22409
_cell_measurement_temperature    93.1
_cell_measurement_theta_max      29.9
_cell_measurement_theta_min      3.0
_cell_volume                     2228(2)
_diffrn_detector_area_resol_mean 10.00
_diffrn_measured_fraction_theta_full 0.9956
_diffrn_measured_fraction_theta_max 0.9956
_diffrn_measurement_device_type  'Rigaku RAXIS-RAPID'
_diffrn_measurement_method       \w
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.7107
_diffrn_reflns_av_R_equivalents  0.026
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       32
_diffrn_reflns_limit_l_min       -32
_diffrn_reflns_number            23616
_diffrn_reflns_theta_full        29.91
_diffrn_reflns_theta_max         29.91
_exptl_absorpt_coefficient_mu    2.243
_exptl_absorpt_correction_T_max  0.747
_exptl_absorpt_correction_T_min  0.489
_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    1.644
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1112.00
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.13
_refine_diff_density_max         1.65
_refine_diff_density_min         -0.89
_refine_ls_abs_structure_details
'Flack, H. D. (1983), Acta Cryst. A39, 876-881.  2753 Friedel Pairs'
_refine_ls_abs_structure_Flack   0.003(5)
_refine_ls_extinction_coef       ?
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.025
_refine_ls_hydrogen_treatment    mixed
_refine_ls_number_parameters     300
_refine_ls_number_reflns         6399
_refine_ls_R_factor_gt           0.0270
_refine_ls_shift/su_max          0.0000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[0.0003Fo^2^ + 0.3000\s(Fo^2^)]/(4Fo^2^)'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.0710
_reflns_number_gt                5306
_reflns_number_total             6399
_reflns_threshold_expression     F^2^>2.0\s(F^2^)
_cod_database_code               4060010