Metal- and additive-free TfOH catalyzed chemoselective O- and S-trifluoroethylation of oxindoles, isoindolines and thio-oxindoles
Lamba, Manisha; Singh, Prasoon Raj; Bhatt, Shubham; Goswami, Avijit; Green Chemistry 26 (2024) 448–455; doi:10.1039/D3GC03702A

data_7247785
_publ_section_title
;
 Metal- and additive-free TfOH catalyzed chemoselective O- and
 S-trifluoroethylation of oxindoles, isoindolines and thio-oxindoles
;
_journal_issue                   1
_journal_name_full               'Green Chemistry'
_journal_page_first              448
_journal_page_last               455
_journal_paper_doi               10.1039/D3GC03702A
_journal_volume                  26
_journal_year                    2024
_chemical_formula_moiety         'C22 H15 F4 N S'
_chemical_formula_sum            'C22 H15 F4 N S'
_chemical_formula_weight         401.41
_space_group_crystal_system      orthorhombic
_space_group_IT_number           29
_space_group_name_Hall           'P 2c -2ac'
_space_group_name_H-M_alt        'P c a 21'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     dual
_audit_creation_date             2023-04-19
_audit_creation_method
;
Olex2 1.5
(compiled 2022.04.07 svn.rca3783a0 for OlexSys, GUI svn.r6498)
;
_audit_update_record
;
2023-04-19 deposited with the CCDC.	2023-11-23 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   6.8631(3)
_cell_length_b                   16.0474(5)
_cell_length_c                   16.9025(6)
_cell_measurement_reflns_used    5820
_cell_measurement_temperature    298
_cell_measurement_theta_max      26.36
_cell_measurement_theta_min      2.72
_cell_volume                     1861.56(12)
_computing_cell_refinement       'SAINT V8.40B (?, 2016)'
_computing_data_reduction        'SAINT V8.40B (?, 2016)'
_computing_molecular_graphics    'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2018/3 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      298
_diffrn_detector                 'Bruker APEX2 area detector'
_diffrn_detector_area_resol_mean 7.9
_diffrn_detector_type            'CCD area detector'
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_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_R_equivalents  0.0595
_diffrn_reflns_av_unetI/netI     0.0601
_diffrn_reflns_Laue_measured_fraction_full 0.995
_diffrn_reflns_Laue_measured_fraction_max 0.995
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -20
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            9025
_diffrn_reflns_point_group_measured_fraction_full 0.989
_diffrn_reflns_point_group_measured_fraction_max 0.987
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.417
_diffrn_reflns_theta_min         2.724
_diffrn_source                   'microfocus sealed X-ray tube'
_diffrn_source_current           1.0
_diffrn_source_power             0.05
_diffrn_source_type              'Incoatec I\ms'
_diffrn_source_voltage           50.0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.219
_exptl_absorpt_correction_T_max  0.7454
_exptl_absorpt_correction_T_min  0.4960
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.1546 before and 0.0711 after correction.
The Ratio of minimum to maximum transmission is 0.6654.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.432
_exptl_crystal_description       block
_exptl_crystal_F_000             824
_exptl_crystal_size_max          0.235
_exptl_crystal_size_mid          0.123
_exptl_crystal_size_min          0.098
_refine_diff_density_max         0.213
_refine_diff_density_min         -0.246
_refine_diff_density_rms         0.044
_refine_ls_abs_structure_details
;
 Flack x determined using 1428 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.03(5)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.045
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     257
_refine_ls_number_reflns         3786
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.045
_refine_ls_R_factor_all          0.0496
_refine_ls_R_factor_gt           0.0441
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0509P)^2^+0.2850P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1068
_refine_ls_wR_factor_ref         0.1112
_reflns_Friedel_coverage         0.912
_reflns_Friedel_fraction_full    0.983
_reflns_Friedel_fraction_max     0.979
_reflns_number_gt                3446
_reflns_number_total             3786
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d3gc03702a2.cif
_cod_data_source_block           agml_868_0ma_a
_cod_depositor_comments
'Adding full bibliography for 7247784--7247789.cif.'
_cod_database_code               7247785
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.979
_shelx_estimated_absorpt_t_min   0.950
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
2.a Secondary CH2 refined with riding coordinates:
 C2(H2A,H2B)
2.b Aromatic/amide H refined with riding coordinates:
 C14(H14), C13(H13), C12(H12), C21(H21), C20(H20), C18(H18), C15(H15),
 C10(H10), C9(H9), C8(H8), C7(H7), C6(H6)
;
_shelx_res_checksum              67537
_olex2_submission_special_instructions 'No special instructions were received'