Catalytic Enantioselective Synthesis of 3,4-Unsubstituted Thiochromenes through Sulfa-Michael/Julia-Kocienski Olefination Cascade Reaction.
Simlandy, Amit Kumar; Mukherjee, Santanu; The Journal of organic chemistry 82 (2017) 4851–4858; doi:10.1021/acs.joc.7b00579

data_4032444
_publ_section_title
;
 Catalytic Enantioselective Synthesis of 3,4-Unsubstituted Thiochromenes
 through Sulfa-Michael/Julia-Kocienski Olefination Cascade Reaction.
;
_journal_issue                   9
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              4851
_journal_page_last               4858
_journal_paper_doi               10.1021/acs.joc.7b00579
_journal_volume                  82
_journal_year                    2017
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C15 H11 N O2 S'
_chemical_formula_sum            'C15 H11 N O2 S'
_chemical_formula_weight         269.31
_chemical_name_systematic        3ak
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_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
_audit_creation_date             2016-05-06
_audit_creation_method
;
Olex2 1.2
(compiled 2015.01.26 svn.r3150 for OlexSys, GUI svn.r4998)
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   6.9573(7)
_cell_length_b                   13.1585(13)
_cell_length_c                   13.8579(14)
_cell_measurement_reflns_used    9877
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      24.977
_cell_measurement_theta_min      2.134
_cell_volume                     1268.7(2)
_computing_cell_refinement       'SAINT v8.34A (Bruker, 2013)'
_computing_data_reduction        'SAINT v8.34A (Bruker, 2013)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2008)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector                 'Bruker APEX2 area detector'
_diffrn_detector_area_resol_mean 7.9
_diffrn_detector_type            'CCD area detector'
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device       'three-circle diffractometer'
_diffrn_measurement_device_type  'Bruker SMART APEX2 area detector'
_diffrn_measurement_method       '\w and \f scans'
_diffrn_radiation_monochromator  'mirror optics'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_unetI/netI     0.0757
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            21761
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 1.000
_diffrn_reflns_theta_full        24.977
_diffrn_reflns_theta_max         24.977
_diffrn_reflns_theta_min         2.134
_diffrn_source                   'microfocus sealed X-ray tube'
_diffrn_source_type              'Incoatec I\ms'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.251
_exptl_absorpt_correction_T_max  0.7452
_exptl_absorpt_correction_T_min  0.6093
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2014/2 (Bruker,2014/2) was used for absorption correction.
wR2(int) was 0.1550 before and 0.0843 after correction.
The Ratio of minimum to maximum transmission is 0.8176.
The \l/2 correction factor is 0.00150.
;
_exptl_crystal_colour            'clear light yellow'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_modifier   light
_exptl_crystal_colour_primary    yellow
_exptl_crystal_density_diffrn    1.410
_exptl_crystal_description       block
_exptl_crystal_F_000             560
_exptl_crystal_size_max          0.26
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.24
_refine_diff_density_max         0.666
_refine_diff_density_min         -0.354
_refine_diff_density_rms         0.050
_refine_ls_abs_structure_details
;
 Flack x determined using 797 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.09(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.036
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     173
_refine_ls_number_reflns         21761
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.036
_refine_ls_R_factor_all          0.0554
_refine_ls_R_factor_gt           0.0488
_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^)+(0.0459P)^2^+0.6272P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1274
_refine_ls_wR_factor_ref         0.1326
_reflns_Friedel_coverage         0.703
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     1.000
_reflns_number_gt                19416
_reflns_number_total             21761
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo7b00579_si_003.cif
_cod_data_source_block           3ak
_cod_depositor_comments          'Adding full bibliography for 4032444.cif.'
_cod_database_code               4032444
_olex2_refinement_description
;
1. Twinned data refinement
 Scales: 1 0
2. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
3.a Ternary CH refined with riding coordinates:
 C9C(H9C)
3.b Aromatic/amide H refined with riding coordinates:
 C11C(H11C), C14C(H14C), C15C(H15C), C8C(H8C), C4C(H4C), C13C(H13C), C7C(H7C),
 C1C(H1C), C2C(H2C), C3C(H3C)
;
_shelx_res_checksum              530
_shelx_hkl_checksum              62942
_shelx_shelxl_version_number     2014/7
_olex2_submission_special_instructions 'No special instructions were received'