Asymmetric Substitution at the Tetrasubstituted Chiral Carbon: Catalytic Ring-Opening Alkylation of Racemic 2,2-Disubstituted Aziridines with 3-Substituted Oxindoles
Kohsuke Ohmatsu; Yuichiro Ando; Takashi Ooi; Journal of the American Chemical Society 135 (2013) 18706–18709; doi:10.1021/ja411647x

data_4121371
_publ_section_title
;
 Asymmetric Substitution at the Tetrasubstituted Chiral Carbon: Catalytic
 Ring-Opening Alkylation of Racemic 2,2-Disubstituted Aziridines with
 3-Substituted Oxindoles
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              18706
_journal_page_last               18709
_journal_paper_doi               10.1021/ja411647x
_journal_volume                  135
_journal_year                    2013
_chemical_formula_sum            'C20 H24 N2'
_chemical_formula_weight         292.41
_space_group_IT_number           146
_symmetry_cell_setting           rhombohedral
_symmetry_space_group_name_Hall  'R 3'
_symmetry_space_group_name_H-M   'R 3 :H'
_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                120.00
_cell_formula_units_Z            9
_cell_length_a                   21.290(6)
_cell_length_b                   21.290(6)
_cell_length_c                   9.790(4)
_cell_measurement_reflns_used    2816
_cell_measurement_temperature    123(2)
_cell_measurement_theta_max      28.28
_cell_measurement_theta_min      2.35
_cell_volume                     3843(2)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      123(2)
_diffrn_detector_area_resol_mean 8.366
_diffrn_measured_fraction_theta_full 0.876
_diffrn_measured_fraction_theta_max 0.876
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0528
_diffrn_reflns_av_sigmaI/netI    0.0908
_diffrn_reflns_limit_h_max       24
_diffrn_reflns_limit_h_min       -28
_diffrn_reflns_limit_k_max       28
_diffrn_reflns_limit_k_min       -27
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            7069
_diffrn_reflns_theta_full        28.34
_diffrn_reflns_theta_max         28.34
_diffrn_reflns_theta_min         1.91
_exptl_absorpt_coefficient_mu    0.067
_exptl_absorpt_correction_T_max  0.9934
_exptl_absorpt_correction_T_min  0.9803
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.137
_exptl_crystal_description       block
_exptl_crystal_F_000             1422
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.235
_refine_diff_density_min         -0.220
_refine_diff_density_rms         0.047
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -1(6)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.169
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     203
_refine_ls_number_reflns         3315
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.169
_refine_ls_R_factor_all          0.0973
_refine_ls_R_factor_gt           0.0748
_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^)+(0.0626P)^2^+2.9241P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1857
_refine_ls_wR_factor_ref         0.1931
_reflns_number_gt                2401
_reflns_number_total             3315
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja411647x_si_006.cif
_cod_data_source_block           3427and
_cod_original_sg_symbol_H-M      'R 3'
_cod_database_code               4121371