Highly enantioselective and organocatalytic alpha-amination of 2-oxindoles.
Cheng, Liang; Liu, Li; Wang, Dong; Chen, Yong-Jun; Organic letters 11 (2009) 3874–3877; doi:10.1021/ol901405r

data_1504073
_publ_section_title
;
 Highly enantioselective and organocatalytic alpha-amination of
 2-oxindoles.
;
_journal_issue                   17
_journal_name_full               'Organic letters'
_journal_page_first              3874
_journal_page_last               3877
_journal_paper_doi               10.1021/ol901405r
_journal_volume                  11
_journal_year                    2009
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C13 H11 N O S'
_chemical_formula_sum            'C13 H11 N O S'
_chemical_formula_weight         229.29
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_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                 95.88(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   5.8503(12)
_cell_length_b                   8.4929(17)
_cell_length_c                   10.957(2)
_cell_measurement_reflns_used    678
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.17
_cell_volume                     541.55(19)
_computing_cell_refinement       'Rapid Auto(Rigaku 2001)'
_computing_data_collection       'Rapid Auto(Rigaku 2001)'
_computing_data_reduction        'Rapid Auto(Rigaku 2001)'
_computing_molecular_graphics    'XP in Siemens SHELXTL (Sheldrick, 1994)'
_computing_publication_material  'SHELX97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Rigaku raxis Rapid IP Area Detector'
_diffrn_measurement_method       '\w scans at fixed \c = 45\%'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0741
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            2460
_diffrn_reflns_theta_full        27.44
_diffrn_reflns_theta_max         27.44
_diffrn_reflns_theta_min         1.87
_exptl_absorpt_coefficient_mu    0.273
_exptl_absorpt_correction_T_max  0.9627
_exptl_absorpt_correction_T_min  0.8985
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'ABSCOR by T.Higashi    8 March, 1995'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.406
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             240
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.14
_refine_diff_density_max         0.345
_refine_diff_density_min         -0.233
_refine_diff_density_rms         0.073
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.02(11)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.039
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     145
_refine_ls_number_reflns         2460
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.039
_refine_ls_R_factor_all          0.0591
_refine_ls_R_factor_gt           0.0444
_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^)+(0.0548P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0921
_refine_ls_wR_factor_ref         0.1142
_reflns_number_gt                2106
_reflns_number_total             2460
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol901405r_si_002.cif
_cod_data_source_block           sx2655
_cod_original_cell_volume        541.54(19)
_cod_original_sg_symbol_H-M      P2(1)
_cod_database_code               1504073