SmI2-mediated reductive cyclization of β-arylthio ketones: a facile and diastereoselective synthesis of thiochroman derivatives
Mao, Hui; You, Bingxin; Zhou, Liejin; Xie, Tingting; Wen, Yihang; Lv, Xin; Wang, Xiaoxia; Org. Biomol. Chem.  (2017) –; doi:10.1039/C7OB01082F

data_7155725
_publ_section_title
;
 SmI2-mediated reductive cyclization of \b-arylthio ketones: a facile and
 diastereoselective synthesis of thiochroman derivatives
;
_journal_name_full               'Org. Biomol. Chem.'
_journal_paper_doi               10.1039/C7OB01082F
_journal_year                    2017
_chemical_formula_sum            'C24 H22 N2 O6 S'
_chemical_formula_weight         466.50
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_block_doi                 10.5517/ccdc.csd.cc1lcjvb
_audit_creation_method           SHELXL-97
_audit_update_record
;
2016-03-28 deposited with the CCDC.
2017-06-28 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 93.197(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.478(2)
_cell_length_b                   12.291(2)
_cell_length_c                   17.574(3)
_cell_measurement_reflns_used    5994
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      21.737
_cell_measurement_theta_min      2.658
_cell_volume                     2259.7(7)
_computing_cell_refinement       'Bruker XSCANS'
_computing_data_collection       'Bruker XSCANS'
_computing_data_reduction        'Bruker SHELXTL'
_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      296(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'Bruker P4'
_diffrn_measurement_method       '\w 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  0.0618
_diffrn_reflns_av_sigmaI/netI    0.0360
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            46298
_diffrn_reflns_theta_full        27.64
_diffrn_reflns_theta_max         27.64
_diffrn_reflns_theta_min         2.76
_exptl_absorpt_coefficient_mu    0.187
_exptl_absorpt_correction_T_max  .963
_exptl_absorpt_correction_T_min  .956
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1996)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.371
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             976
_exptl_crystal_size_max          .3
_exptl_crystal_size_mid          .2
_exptl_crystal_size_min          .2
_refine_diff_density_max         0.217
_refine_diff_density_min         -0.212
_refine_diff_density_rms         0.051
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.890
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     298
_refine_ls_number_reflns         5222
_refine_ls_number_restraints     18
_refine_ls_restrained_S_all      0.890
_refine_ls_R_factor_all          0.0826
_refine_ls_R_factor_gt           0.0475
_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^)+(0.0666P)^2^+1.2652P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1117
_refine_ls_wR_factor_ref         0.1384
_reflns_number_gt                3483
_reflns_number_total             5222
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c7ob01082f2.cif
_cod_data_source_block           a
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/home/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 4973 2017-02-22 13:04:09Z antanas 
;
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               7155725