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_7247788
_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         'C28 H26 Br F3 N O'
_chemical_formula_sum            'C28 H26 Br F3 N O'
_chemical_formula_weight         529.41
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2023-08-04
_audit_creation_method
;
Olex2 1.5
(compiled 2023.03.06 svn.rbb2c1857 for OlexSys, GUI svn.r6748)
;
_audit_update_record
;
2023-08-04 deposited with the CCDC.	2023-11-23 downloaded from the CCDC.
;
_cell_angle_alpha                75.9800(10)
_cell_angle_beta                 78.6930(10)
_cell_angle_gamma                81.3380(10)
_cell_formula_units_Z            2
_cell_length_a                   7.9716(2)
_cell_length_b                   10.9315(3)
_cell_length_c                   15.7731(4)
_cell_measurement_reflns_used    9952
_cell_measurement_temperature    298
_cell_measurement_theta_max      28.432
_cell_measurement_theta_min      2.622
_cell_volume                     1299.96(6)
_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  'XL  (Sheldrick, 2008)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      298.00
_diffrn_detector                 'Bruker APEX2 area detector'
_diffrn_detector_area_resol_mean 7.9
_diffrn_detector_type            'CCD area detector'
_diffrn_measured_fraction_theta_full 0.983
_diffrn_measured_fraction_theta_max 0.982
_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  0.0576
_diffrn_reflns_av_unetI/netI     0.0362
_diffrn_reflns_Laue_measured_fraction_full 0.983
_diffrn_reflns_Laue_measured_fraction_max 0.982
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            35476
_diffrn_reflns_point_group_measured_fraction_full 0.983
_diffrn_reflns_point_group_measured_fraction_max 0.982
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         28.452
_diffrn_reflns_theta_min         1.932
_diffrn_source                   'microfocus sealed X-ray tube'
_diffrn_source_type              'Incoatec I\ms'
_exptl_absorpt_coefficient_mu    1.622
_exptl_absorpt_correction_T_max  0.7457
_exptl_absorpt_correction_T_min  0.4234
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.1367 before and 0.0822 after correction.
The Ratio of minimum to maximum transmission is 0.5678.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.353
_exptl_crystal_description       block
_exptl_crystal_F_000             542
_exptl_crystal_size_max          0.215
_exptl_crystal_size_mid          0.212
_exptl_crystal_size_min          0.125
_refine_diff_density_max         2.000
_refine_diff_density_min         -1.424
_refine_diff_density_rms         0.068
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.030
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     313
_refine_ls_number_reflns         6457
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.030
_refine_ls_R_factor_all          0.0766
_refine_ls_R_factor_gt           0.0639
_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^)+(0.0707P)^2^+1.7545P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1626
_refine_ls_wR_factor_ref         0.1725
_reflns_Friedel_coverage         0.000
_reflns_number_gt                5278
_reflns_number_total             6457
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d3gc03702a2.cif
_cod_data_source_block           agml_1127_0m
_cod_depositor_comments
'Adding full bibliography for 7247784--7247789.cif.'
_cod_database_code               7247788
_shelx_shelxl_version_number     2019/1
_shelx_estimated_absorpt_t_max   0.823
_shelx_estimated_absorpt_t_min   0.722
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All N(H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Aromatic/amide H refined with riding coordinates:
 N1(H1), C27(H27), C15(H15), C8(H8), C24(H24), C21(H21), C2(H2), C11(H11)
2.b Idealised Me refined as rotating group:
 C7(H7A,H7B,H7C), C13(H13A,H13B,H13C), C10(H10A,H10B,H10C), C23(H23A,H23B,
 H23C), C20(H20A,H20B,H20C), C26(H26A,H26B,H26C)
;
_shelx_res_checksum              28753
_olex2_submission_special_instructions 'No special instructions were received'