Reaction of Quinones and Guanidine Derivatives: Simple Access to Bis-2-aminobenzimidazole Moiety of Benzosceptrin and Other Benzazole Motifs.
Tran, Minh Quan; Ermolenko, Ludmila; Retailleau, Pascal; Nguyen, Thanh Binh; Al-Mourabit, Ali; Organic letters 16 (2014) 920–923; doi:10.1021/ol403672p

data_1513497
_publ_section_title
;
 Reaction of Quinones and Guanidine Derivatives: Simple Access to
 Bis-2-aminobenzimidazole Moiety of Benzosceptrin and Other Benzazole
 Motifs.
;
_journal_issue                   3
_journal_name_full               'Organic letters'
_journal_page_first              920
_journal_page_last               923
_journal_paper_doi               10.1021/ol403672p
_journal_volume                  16
_journal_year                    2014
_chemical_formula_moiety         '4(C13 H10 Cl N3 O), C7 H8'
_chemical_formula_sum            'C59 H48 Cl4 N12 O4'
_chemical_formula_weight         1130.89
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   14.849(3)
_cell_length_b                   12.950(3)
_cell_length_c                   30.051(5)
_cell_measurement_reflns_used    7060
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      25.350
_cell_measurement_theta_min      0.407
_cell_volume                     5779(2)
_computing_cell_refinement
'DENZO (Otwinowski & Minor, 1997); COLLECT (Nonius B.V., 1999)'
_computing_data_collection
'DENZO (Otwinowski & Minor, 1997); COLLECT (Nonius B.V., 1999)'
_computing_data_reduction        'SCALEPACK (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'PLATON (Spek, 2003)'
_computing_publication_material  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_refinement
'SHELXL97 (Sheldrick, 2008); CRYSTALBUILDER (Welter, 2006)'
_computing_structure_solution    'SIR97 (Altomare et al, 1999)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 9
_diffrn_measured_fraction_theta_full 0.958
_diffrn_measured_fraction_theta_max 0.958
_diffrn_measurement_device_type  'Nonius kappa-CCD diffractometer'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71070
_diffrn_reflns_av_R_equivalents  0.0630
_diffrn_reflns_av_sigmaI/netI    0.0503
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       35
_diffrn_reflns_limit_l_min       -35
_diffrn_reflns_number            18143
_diffrn_reflns_theta_full        24.71
_diffrn_reflns_theta_max         24.71
_diffrn_reflns_theta_min         2.19
_diffrn_source                   'fine-focus sealed tube'
_diffrn_source_type              'Nonius Kappa CCD'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.262
_exptl_absorpt_correction_T_max  0.97
_exptl_absorpt_correction_T_min  0.79
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SCALEPACK (Otwinowski & Minor, 1997)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.300
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'elongated plate'
_exptl_crystal_F_000             2344
_exptl_crystal_size_max          0.60
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.624
_refine_diff_density_min         -0.297
_refine_diff_density_rms         0.072
_refine_ls_extinction_coef       0.0100(16)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.117
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     379
_refine_ls_number_reflns         4718
_refine_ls_number_restraints     59
_refine_ls_restrained_S_all      1.123
_refine_ls_R_factor_all          0.0888
_refine_ls_R_factor_gt           0.0682
_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^)+(0.0734P)^2^+5.5850P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1693
_refine_ls_wR_factor_ref         0.1819
_reflns_number_gt                3834
_reflns_number_total             4733
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol403672p_si_001.cif
_cod_data_source_block           pbca
_cod_database_code               1513497