Regio- and Stereoselective Synthesis of Sulfur-Bearing Four-Membered Heterocycles: Direct Access to 2,4-Disubstituted Thietane 1-Oxides.
Degennaro, Leonardo; Carroccia, Laura; Parisi, Giovanna; Zenzola, Marina; Romanazzi, Giuseppe; Fanelli, Flavio; Pisano, Luisa; Luisi, Renzo; The Journal of organic chemistry 80 (2015) 12201–12211; doi:10.1021/acs.joc.5b02126

data_4036469
_publ_section_title
;
 Regio- and Stereoselective Synthesis of Sulfur-Bearing Four-Membered
 Heterocycles: Direct Access to 2,4-Disubstituted Thietane 1-Oxides.
;
_journal_issue                   24
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              12201
_journal_page_last               12211
_journal_paper_doi               10.1021/acs.joc.5b02126
_journal_volume                  80
_journal_year                    2015
_chemical_formula_sum            'C23 H22 O2 S'
_chemical_formula_weight         362.46
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 97.533(8)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   5.7140(6)
_cell_length_b                   17.385(2)
_cell_length_c                   19.291(3)
_cell_measurement_temperature    293(2)
_cell_volume                     1899.8(4)
_computing_cell_refinement
'DIRAX (Duisenberg,1992; Duisenberg et al., 2003)'
_computing_data_collection       'COLLECT (Nonius, 2002)'
_computing_data_reduction        'EVAL (Nonius, 2002; Duisenberg et al., 2000)'
_computing_molecular_graphics    'ORTEP-3 (Farrugia, 2012)'
_computing_publication_material
'WinGX (Farrugia, 2012) and publCIF (Westrip, 2010)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SIR2011 (Burla et al., 2012)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'Bruker-Nonius KappaCCD'
_diffrn_measurement_method       '\f scans and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1051
_diffrn_reflns_av_unetI/netI     0.1168
_diffrn_reflns_Laue_measured_fraction_full 0.992
_diffrn_reflns_Laue_measured_fraction_max 0.993
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            18446
_diffrn_reflns_point_group_measured_fraction_full 0.992
_diffrn_reflns_point_group_measured_fraction_max 0.993
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.508
_diffrn_reflns_theta_min         5.001
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.184
_exptl_absorpt_correction_T_max  0.879
_exptl_absorpt_correction_T_min  0.808
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2008)'
_exptl_crystal_colour            white
_exptl_crystal_density_diffrn    1.267
_exptl_crystal_description       block
_exptl_crystal_F_000             768
_exptl_crystal_size_max          0.400
_exptl_crystal_size_mid          0.250
_exptl_crystal_size_min          0.050
_refine_diff_density_max         0.231
_refine_diff_density_min         -0.276
_refine_diff_density_rms         0.047
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.969
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     238
_refine_ls_number_reflns         4353
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.969
_refine_ls_R_factor_all          0.1561
_refine_ls_R_factor_gt           0.0626
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0690P)^2^+0.2477P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1281
_refine_ls_wR_factor_ref         0.1633
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2120
_reflns_number_total             4353
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo5b02126_si_005.cif
_cod_data_source_block           shelx
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4036469
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.930
_shelx_estimated_absorpt_t_max   0.991
_shelx_res_checksum              34344
_shelx_hkl_checksum              26836