Control of Activation Mode To Achieve Diastereodivergence in Asymmetric Syntheses of Chiral Spiropiperidinone Derivatives.
Li, Xiang; Huang, Wei; Liu, Yan-Qing; Kang, Jing-Wen; Xia, Dan; He, Gu; Peng, Cheng; Han, Bo; The Journal of organic chemistry 82 (2017) 397–406; doi:10.1021/acs.joc.6b02489

data_4032215
_publ_section_title
;
 Control of Activation Mode To Achieve Diastereodivergence in Asymmetric
 Syntheses of Chiral Spiropiperidinone Derivatives.
;
_journal_issue                   1
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              397
_journal_page_last               406
_journal_paper_doi               10.1021/acs.joc.6b02489
_journal_volume                  82
_journal_year                    2017
_chemical_absolute_configuration S
_chemical_formula_sum            'C20 H21 N O5 S'
_chemical_formula_weight         387.44
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_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                   7.2594(3)
_cell_length_b                   10.1015(4)
_cell_length_c                   26.4392(12)
_cell_measurement_reflns_used    9952
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.345
_cell_measurement_theta_min      3.200
_cell_volume                     1938.81(14)
_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      293(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Rigaku Saturn724 CCD'
_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  0.0915
_diffrn_reflns_av_sigmaI/netI    0.0370
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -31
_diffrn_reflns_number            25295
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         3.07
_exptl_absorpt_coefficient_mu    0.197
_exptl_absorpt_correction_T_max  0.9499
_exptl_absorpt_correction_T_min  0.9096
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS; Bruker, 2000'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.327
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             816
_exptl_crystal_size_max          0.489
_exptl_crystal_size_mid          0.375
_exptl_crystal_size_min          0.263
_refine_diff_density_max         0.216
_refine_diff_density_min         -0.268
_refine_diff_density_rms         0.065
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.03(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.060
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     246
_refine_ls_number_reflns         3419
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.060
_refine_ls_R_factor_all          0.0550
_refine_ls_R_factor_gt           0.0486
_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^)+(0.0777P)^2^+0.2928P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1210
_refine_ls_wR_factor_ref         0.1264
_reflns_number_gt                3076
_reflns_number_total             3419
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo6b02489_si_002.cif
_cod_data_source_block           111
_cod_original_sg_symbol_H-M      P212121
_cod_database_code               4032215