Pd-Catalyzed direct C-H arylation of pyrrolo[1,2-<i>a</i>]quinoxalines.
Hao, Di; Yang, Zhen; Liu, Yali; Li, Yang; Li, Chuntian; Gu, Yanlong; Vaccaro, Luigi; Liu, Jichang; Liu, Ping; Organic & biomolecular chemistry 20 (2022) 847–851; doi:10.1039/d1ob02248b

data_7158478
_publ_section_title
;
 Pd-Catalyzed direct C-H arylation of pyrrolo[1,2-<i>a</i>]quinoxalines.
;
_journal_issue                   4
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              847
_journal_page_last               851
_journal_paper_doi               10.1039/d1ob02248b
_journal_volume                  20
_journal_year                    2022
_chemical_formula_moiety         'C24 H18 N2'
_chemical_formula_sum            'C24 H18 N2'
_chemical_formula_weight         334.40
_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     dual
_audit_creation_date             2021-06-28
_audit_creation_method
;
Olex2 1.2
(compiled 2018.05.29 svn.r3508 for OlexSys, GUI svn.r5506)
;
_audit_update_record
;
2021-09-24 deposited with the CCDC.	2021-12-22 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 93.250(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   7.0437(2)
_cell_length_b                   9.6990(3)
_cell_length_c                   25.3194(7)
_cell_measurement_reflns_used    6116
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      68.14
_cell_measurement_theta_min      4.88
_cell_volume                     1726.96(9)
_computing_cell_refinement       'SAINT V8.38A (?, 2016)'
_computing_data_reduction        'SAINT V8.38A (?, 2016)'
_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    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      173.0
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Bruker D8 Venture'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0615
_diffrn_reflns_av_unetI/netI     0.0391
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.997
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       30
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            16835
_diffrn_reflns_point_group_measured_fraction_full 0.998
_diffrn_reflns_point_group_measured_fraction_max 0.997
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         68.219
_diffrn_reflns_theta_min         3.497
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.583
_exptl_absorpt_correction_T_max  0.7531
_exptl_absorpt_correction_T_min  0.6457
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2016/2 (Bruker,2016/2) was used for absorption correction. wR2(int) was 0.1187 before and 0.0650 after correction. The Ratio of minimum to maximum transmission is 0.8574. The \l/2 correction factor is Not present.'
_exptl_crystal_density_diffrn    1.286
_exptl_crystal_description       block
_exptl_crystal_F_000             704
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.21
_refine_diff_density_max         0.198
_refine_diff_density_min         -0.192
_refine_diff_density_rms         0.038
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.067
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     236
_refine_ls_number_reflns         3162
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.067
_refine_ls_R_factor_all          0.0560
_refine_ls_R_factor_gt           0.0438
_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^)+(0.0481P)^2^+0.3674P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1049
_refine_ls_wR_factor_ref         0.1129
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2558
_reflns_number_total             3162
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d1ob02248b2.cif
_cod_data_source_block           11_CCDC2
_cod_depositor_comments
'Adding full bibliography for 7158476--7158478.cif.'
_cod_database_code               7158478
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.887
_shelx_estimated_absorpt_t_min   0.868
_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), C17(H17), C2(H2), C9(H9), C16(H16), C13(H13), C6(H6), C21(H21),
 C22(H22), C14(H14), C3(H3), C24(H24), C5(H5), C23(H23), C4(H4)
2.b Idealised Me refined as rotating group:
 C18(H18A,H18B,H18C)
;
_shelx_res_checksum              35352
_olex2_submission_special_instructions 'No special instructions were received'