Silver Mediated Thio-Acetoxylation and TFA Triggered Cyclization of Amino Disulfides with Unactivated Alkenes: Synthesis of 3-Aryl/Alkyl-1,4-benzothiazines
Prasad, Chelluri Durga Durga; Verma, Ajay; Sattar, Moh; Kumar, Sangit; RSC Adv.  (2015) –; doi:10.1039/C5RA12995H

data_7221891
_publ_section_title
;
 Silver Mediated Thio-Acetoxylation and TFA Triggered Cyclization of Amino
 Disulfides with Unactivated Alkenes: Synthesis of
 3-Aryl/Alkyl-1,4-benzothiazines
;
_journal_name_full               'RSC Adv.'
_journal_paper_doi               10.1039/C5RA12995H
_journal_year                    2015
_chemical_formula_moiety         'C20  H17  N1  O1  S1'
_chemical_formula_sum            'C20 H17 N O S'
_chemical_formula_weight         319.4
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_audit_conform_dict_location     ftp://ftp.iucr.org/pub/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.4.3
_audit_creation_date             2015-03-08T14:55:43-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_audit_update_record
;
2015-07-01 deposited with the CCDC.
2015-08-25 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 108.141(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   16.3601(8)
_cell_length_b                   6.1956(3)
_cell_length_c                   16.4686(8)
_cell_measurement_reflns_used    0
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      0
_cell_measurement_theta_min      0
_cell_measurement_wavelength     0.71073
_cell_volume                     1586.29(13)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Ortep for Windows (Farrugia, 2012)'
_computing_publication_material  'WinGX publication routines (Farrugia, 2012)'
_computing_structure_refinement  'SHELXL-2014 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXS-97 (Sheldrick 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.989
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0178
_diffrn_reflns_Laue_measured_fraction_full 0.991
_diffrn_reflns_Laue_measured_fraction_max 0.989
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            14231
_diffrn_reflns_point_group_measured_fraction_full 0.991
_diffrn_reflns_point_group_measured_fraction_max 0.989
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.717
_diffrn_reflns_theta_min         1.31
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.208
_exptl_absorpt_correction_type   none
_exptl_crystal_density_diffrn    1.337
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       char
_exptl_crystal_F_000             672
_exptl_crystal_size_max          0
_exptl_crystal_size_mid          0
_exptl_crystal_size_min          0
_refine_diff_density_max         0.159
_refine_diff_density_min         -0.19
_refine_diff_density_rms         0.028
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.038
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_constraints    0
_refine_ls_number_parameters     209
_refine_ls_number_reflns         2997
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.038
_refine_ls_R_factor_all          0.0419
_refine_ls_R_factor_gt           0.0352
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0473P)^2^+0.4068P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0921
_refine_ls_wR_factor_ref         0.0972
_reflns_number_gt                2587
_reflns_number_total             2997
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c5ra12995h3.cif
_cod_data_source_block           DP_547
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7221891