Iridium(III)-Catalyzed Intermolecular Mild N-Arylation of Aliphatic Amides Using Quinoid Carbene: A Migratory Insertion-Based Approach
Bera, Satabdi; Roy, Saikat; Pal, Shyam Chand; Anoop, Anakuthil; Samanta, Rajarshi; ACS Catalysis  (2021) 10847–10854; doi:10.1021/acscatal.1c02653

data_4518972
_publ_section_title
;
 Iridium(III)-Catalyzed Intermolecular Mild N-Arylation of Aliphatic
 Amides Using Quinoid Carbene: A Migratory Insertion-Based Approach
;
_journal_name_full               'ACS Catalysis'
_journal_page_first              10847
_journal_page_last               10854
_journal_paper_doi               10.1021/acscatal.1c02653
_journal_year                    2021
_chemical_formula_sum            'C20 H20 N2 O2'
_chemical_formula_weight         320.38
_space_group_crystal_system      monoclinic
_space_group_IT_number           5
_space_group_name_Hall           'C 2y'
_space_group_name_H-M_alt        'C 1 2 1'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 91.163(9)
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   16.795(7)
_cell_length_b                   7.392(3)
_cell_length_c                   26.651(10)
_cell_measurement_reflns_used    3112
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      20.55
_cell_measurement_theta_min      2.43
_cell_volume                     3308(2)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXS-97 (Sheldrick 2008)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0948
_diffrn_reflns_av_unetI/netI     0.0758
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       33
_diffrn_reflns_limit_l_min       -33
_diffrn_reflns_number            44692
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         26.383
_diffrn_reflns_theta_min         1.528
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.084
_exptl_absorpt_correction_T_max  0.7454
_exptl_absorpt_correction_T_min  0.6856
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'SADABS 2.10 (Bruker 2003)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.287
_exptl_crystal_description       needle
_exptl_crystal_F_000             1360
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.337
_refine_diff_density_min         -0.298
_refine_diff_density_rms         0.052
_refine_ls_abs_structure_details
;
 Flack x determined using 1935 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   1.1(9)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.043
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     441
_refine_ls_number_reflns         6777
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.043
_refine_ls_R_factor_all          0.0774
_refine_ls_R_factor_gt           0.0533
_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^)+(0.0651P)^2^+0.8135P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1283
_refine_ls_wR_factor_ref         0.1408
_reflns_Friedel_coverage         0.850
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     0.999
_reflns_number_gt                5189
_reflns_number_total             6777
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            cs1c02653_si_002.cif
_cod_data_source_block           2
_cod_original_sg_symbol_H-M      'C 2'
_cod_database_code               4518972
_shelx_shelxl_version_number     2014/7
_shelx_res_checksum              15657
_shelx_hkl_checksum              9125