Construction of indeno[1,2-b]pyrroles via chemoselective N-acylation/cyclization/Wittig reaction sequence.
Edukondalu, Athukuri; Vagh, Sandip Sambhaji; Lin, Ting-Han; Lin, Wenwei; Chemical communications (Cambridge, England) 57 (2021) 2045–2048; doi:10.1039/d0cc08184a

data_7127804
_publ_section_title
;
 Construction of indeno[1,2-b]pyrroles via chemoselective
 N-acylation/cyclization/Wittig reaction sequence.
;
_journal_issue                   16
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              2045
_journal_page_last               2048
_journal_paper_doi               10.1039/d0cc08184a
_journal_volume                  57
_journal_year                    2021
_chemical_formula_moiety         'C28 H17 Br N2 O3'
_chemical_formula_sum            'C28 H17 Br N2 O3'
_chemical_formula_weight         509.35
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2020-06-14 deposited with the CCDC.	2021-01-12 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 99.6680(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   9.9178(2)
_cell_length_b                   25.0870(5)
_cell_length_c                   18.0566(4)
_cell_measurement_reflns_used    9406
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      24.989
_cell_measurement_theta_min      2.346
_cell_volume                     4428.82(16)
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 2005)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXL-2014/7 (Sheldrick, 2014)'
_diffrn_ambient_temperature      200(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'D8 Venture'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0549
_diffrn_reflns_av_sigmaI/netI    0.0284
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       29
_diffrn_reflns_limit_k_min       -29
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            77253
_diffrn_reflns_theta_full        25.03
_diffrn_reflns_theta_max         25.03
_diffrn_reflns_theta_min         2.20
_exptl_absorpt_coefficient_mu    1.891
_exptl_absorpt_correction_T_max  0.9282
_exptl_absorpt_correction_T_min  0.5829
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.528
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             2064
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.312
_refine_diff_density_min         -0.461
_refine_diff_density_rms         0.046
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.994
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     613
_refine_ls_number_reflns         7805
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.994
_refine_ls_R_factor_all          0.0465
_refine_ls_R_factor_gt           0.0326
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0465P)^2^+2.0866P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0822
_refine_ls_wR_factor_ref         0.0900
_reflns_number_gt                6295
_reflns_number_total             7805
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            d0cc08184a2.cif
_cod_data_source_block           d21988
_cod_depositor_comments
'Adding full bibliography for 7127803--7127811.cif.'
_cod_original_sg_symbol_H-M      'P 21/n'
_cod_database_code               7127804