Electrochemically enabled synthesis of sulfide imidazopyridines via a radical cyclization cascade
Zhong, Ping-Fu; Lin, Hong-Min; Wang, Lin-Wei; Mo, Zu-Yu; Meng, Xiu-Jin; Tang, Hai-Tao; Pan, Ying-Ming; Green Chemistry 22 (2020) 6334–6339; doi:10.1039/D0GC02125C

data_7241129
_publ_section_title
;
 Electrochemically enabled synthesis of sulfide imidazopyridines via a
 radical cyclization cascade
;
_journal_issue                   19
_journal_name_full               'Green Chemistry'
_journal_page_first              6334
_journal_page_last               6339
_journal_paper_doi               10.1039/D0GC02125C
_journal_volume                  22
_journal_year                    2020
_chemical_formula_moiety         'C21 H18 N2 O S'
_chemical_formula_sum            'C21 H18 N2 O S'
_chemical_formula_weight         346.43
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_block_doi                 10.5517/ccdc.csd.cc23t8px
_audit_creation_date             2019-06-10
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2019-10-22 deposited with the CCDC.	2020-08-19 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 97.519(4)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   11.3700(4)
_cell_length_b                   10.2878(4)
_cell_length_c                   14.5801(6)
_cell_measurement_reflns_used    3529
_cell_measurement_temperature    100.00(10)
_cell_measurement_theta_max      28.9350
_cell_measurement_theta_min      2.6650
_cell_volume                     1690.80(11)
_computing_cell_refinement       'CrysAlisPro 1.171.38.43f (Rigaku OD, 2015)'
_computing_data_collection       'CrysAlisPro 1.171.38.43f (Rigaku OD, 2015)'
_computing_data_reduction        'CrysAlisPro 1.171.38.43f (Rigaku OD, 2015)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXS (Sheldrick, 2008)'
_diffrn_ambient_environment      N~2~
_diffrn_ambient_temperature      100.00(10)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 5.2684
_diffrn_detector_type            AtlasS2
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_details
;
List of Runs (angles in degrees, time in seconds):

  # Type    Start    End  Width  t~exp~   \w     \q     \k     \f   Frames
  1  \w    -16.00  85.00   1.00    3.00    --   11.74  57.00 120.00  101
  2  \w    -58.00  37.00   1.00    3.00    --   11.74 -19.00 -60.00   95
;
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'SuperNova, Dual, Cu at zero, AtlasS2'
_diffrn_measurement_method       '\w scans'
_diffrn_orient_matrix_type
'CrysAlisPro convention (1999,Acta A55,543-557)'
_diffrn_orient_matrix_UB_11      0.0509369000
_diffrn_orient_matrix_UB_12      -0.0110977000
_diffrn_orient_matrix_UB_13      -0.0222907000
_diffrn_orient_matrix_UB_21      -0.0349199000
_diffrn_orient_matrix_UB_22      0.0072990000
_diffrn_orient_matrix_UB_23      -0.0437254000
_diffrn_orient_matrix_UB_31      0.0120737000
_diffrn_orient_matrix_UB_32      0.0676228000
_diffrn_orient_matrix_UB_33      0.0010786000
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0269
_diffrn_reflns_av_unetI/netI     0.0406
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            7544
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 1.000
_diffrn_reflns_theta_full        24.993
_diffrn_reflns_theta_max         24.993
_diffrn_reflns_theta_min         2.141
_diffrn_source                   'micro-focus sealed X-ray tube'
_diffrn_source_type              'SuperNova (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    0.203
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.91722
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.38.43f (Rigaku Oxford Diffraction, 2015)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.361
_exptl_crystal_description       block
_exptl_crystal_F_000             728
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.11
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.228
_refine_diff_density_min         -0.269
_refine_diff_density_rms         0.053
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.048
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     228
_refine_ls_number_reflns         2978
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.048
_refine_ls_R_factor_all          0.0462
_refine_ls_R_factor_gt           0.0382
_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^)+(0.0319P)^2^+0.9959P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0847
_refine_ls_wR_factor_ref         0.0901
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2569
_reflns_number_total             2978
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d0gc02125c2.cif
_cod_data_source_block           b-7
_cod_depositor_comments
'Adding full bibliography for 7241129--7241131.cif.'
_cod_database_code               7241129
_shelx_shelxl_version_number     2018/3
_reflns_odcompleteness_completeness 99.92
_reflns_odcompleteness_iscentric 1
_reflns_odcompleteness_theta     26.32
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Aromatic/amide H refined with riding coordinates:
 C10(H10), C9(H9), C13(H13), C2(H2), C16(H16), C12(H12), C20(H20), C3(H3),
 C5(H5), C19(H19), C17(H17), C4(H4)
2.b Idealised Me refined as rotating group:
 C21(H21A,H21B,H21C), C14(H14A,H14B,H14C)
;
_olex2_submission_special_instructions 'No special instructions were received'
_oxdiff_exptl_absorpt_empirical_details
;
Empirical correction (ABSPACK) includes:
- Absorption correction using spherical harmonics
- Frame scaling
;
_oxdiff_exptl_absorpt_empirical_full_max 1.247
_oxdiff_exptl_absorpt_empirical_full_min 0.763