An HFIP-assisted, cobalt-catalyzed three-component electrophilic C-H amination/cyclization/directing group removal cascade to naphtho[1,2-d]imidazoles.
Begam, Hasina Mamataj; Pradhan, Kangkan; Varalaxmi, Kasarla; Jana, Ranjan; Chemical communications (Cambridge, England) 59 (2023) 5595–5598; doi:10.1039/d3cc00749a

data_7131554
_publ_section_title
;
 An HFIP-assisted, cobalt-catalyzed three-component electrophilic C-H
 amination/cyclization/directing group removal cascade to
 naphtho[1,2-d]imidazoles.
;
_journal_issue                   37
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              5595
_journal_page_last               5598
_journal_paper_doi               10.1039/d3cc00749a
_journal_volume                  59
_journal_year                    2023
_chemical_formula_moiety         'C18 H14 N2'
_chemical_formula_sum            'C18 H14 N2'
_chemical_formula_weight         258.31
_chemical_name_systematic        triclinic
_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             2022-05-11
_audit_creation_method
;
Olex2 1.5-beta
(compiled 2022.04.07 svn.rca3783a0 for OlexSys, GUI svn.r6498)
;
_audit_update_record
;
2022-11-21 deposited with the CCDC.	2023-04-13 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 93.7440(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   6.5843(3)
_cell_length_b                   9.6121(4)
_cell_length_c                   20.5866(8)
_cell_measurement_reflns_used    9967
_cell_measurement_temperature    100.00
_cell_measurement_theta_max      72.22
_cell_measurement_theta_min      4.30
_cell_volume                     1300.12(9)
_computing_cell_refinement       'SAINT V8.40B (?, 2016)'
_computing_data_reduction        'SAINT V8.40B (?, 2016)'
_computing_molecular_graphics    'Olex2 1.5-beta (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 1.5-beta (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL 2018/3 (Sheldrick, 2015)'
_computing_structure_solution    'SHELXT 2018/2 (Sheldrick, 2018)'
_diffrn_ambient_temperature      100.00
_diffrn_measured_fraction_theta_full 0.967
_diffrn_measured_fraction_theta_max 0.964
_diffrn_measurement_device_type  'Bruker APEX III 8D venture'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0487
_diffrn_reflns_av_unetI/netI     0.0328
_diffrn_reflns_Laue_measured_fraction_full 0.967
_diffrn_reflns_Laue_measured_fraction_max 0.964
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            23131
_diffrn_reflns_point_group_measured_fraction_full 0.967
_diffrn_reflns_point_group_measured_fraction_max 0.964
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         72.223
_diffrn_reflns_theta_min         4.304
_diffrn_source_current           1.2
_diffrn_source_power             0.06
_diffrn_source_voltage           50.0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.607
_exptl_absorpt_correction_T_max  0.7536
_exptl_absorpt_correction_T_min  0.6218
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.0940 before and 0.0683 after correction.
The Ratio of minimum to maximum transmission is 0.8251.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            'clear light colourless'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_modifier   light
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.320
_exptl_crystal_description       needle
_exptl_crystal_F_000             544
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.196
_refine_diff_density_min         -0.175
_refine_diff_density_rms         0.041
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.064
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     181
_refine_ls_number_reflns         2472
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.064
_refine_ls_R_factor_all          0.0432
_refine_ls_R_factor_gt           0.0422
_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^)+(0.0611P)^2^+0.3876P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1115
_refine_ls_wR_factor_ref         0.1125
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2395
_reflns_number_total             2472
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d3cc00749a2.cif
_cod_data_source_block           hm1804_2_0m
_cod_depositor_comments
'Adding full bibliography for 7131554--7131555.cif.'
_cod_database_code               7131554
_shelx_shelxl_version_number     2018/3
_shelx_estimated_absorpt_t_max   0.988
_shelx_estimated_absorpt_t_min   0.914
_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:
 C12(H12A,H12B)
2.b Aromatic/amide H refined with riding coordinates:
 C3(H3), C8(H8), C5(H5), C00A(H00A), C6(H6), C7(H7), C11(H11), C4(H4),
 C14(H14), C00I(H00I), C15(H15), C16(H16)
;
_shelx_res_checksum              36848
_shelx_hkl_checksum              39766
_olex2_submission_special_instructions 'No special instructions were received'