Highly efficient and stereoselective construction of dispiro-[oxazolidine-2-thione]bisoxindoles and dispiro[imidazolidine-2-thione]bisoxindoles.
Han, Yan-Yan; Chen, Wen-Bing; Han, Wen-Yong; Wu, Zhi-Jun; Zhang, Xiao-Mei; Yuan, Wei-Cheng; Organic letters 14 (2012) 490–493; doi:10.1021/ol203081x

data_1503537
_publ_section_title
;
 Highly efficient and stereoselective construction of
 dispiro-[oxazolidine-2-thione]bisoxindoles and
 dispiro[imidazolidine-2-thione]bisoxindoles.
;
_journal_issue                   2
_journal_name_full               'Organic letters'
_journal_page_first              490
_journal_page_last               493
_journal_paper_doi               10.1021/ol203081x
_journal_volume                  14
_journal_year                    2012
_chemical_formula_sum            'C33 H30 N4 O4 S2'
_chemical_formula_weight         610.73
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 92.766(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.2440(2)
_cell_length_b                   19.7631(3)
_cell_length_c                   13.6481(2)
_cell_measurement_reflns_used    13802
_cell_measurement_temperature    291(2)
_cell_measurement_theta_max      29.1678
_cell_measurement_theta_min      2.9825
_cell_volume                     3029.30(8)
_computing_cell_refinement       'CrysAlisPro (Oxford Diffraction Ltd.)'
_computing_data_collection       'CrysAlisPro (Oxford Diffraction Ltd.)'
_computing_data_reduction        'CrysAlisPro (Oxford Diffraction Ltd.)'
_computing_molecular_graphics    'Ortep-3 (L. J. Farrugia, 2001)'
_computing_publication_material  SHELXL-97
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      291(2)
_diffrn_detector_area_resol_mean 15.9149
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Gemini S Ultra, Oxford Diffraction'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enhance (Mo) X-ray Source'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0293
_diffrn_reflns_av_sigmaI/netI    0.0221
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            34199
_diffrn_reflns_theta_full        26.37
_diffrn_reflns_theta_max         26.37
_diffrn_reflns_theta_min         2.99
_exptl_absorpt_coefficient_mu    0.221
_exptl_absorpt_correction_T_max  0.9368
_exptl_absorpt_correction_T_min  0.9169
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.34.44 (release 25-10-2010 CrysAlis171 .NET)
(compiled Oct 25 2010,18:11:34)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.339
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1280
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.34
_exptl_crystal_size_min          0.30
_refine_diff_density_max         0.239
_refine_diff_density_min         -0.301
_refine_diff_density_rms         0.035
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.018
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     395
_refine_ls_number_reflns         6184
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.018
_refine_ls_R_factor_all          0.0502
_refine_ls_R_factor_gt           0.0380
_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^)+(0.0424P)^2^+0.9068P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0893
_refine_ls_wR_factor_ref         0.0963
_reflns_number_gt                5028
_reflns_number_total             6184
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol203081x_si_003.cif
_cod_data_source_block           1104-ywc-2
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               1503537