An I2-mediated cascade reaction of 2'-bromoacetophenones with benzohydrazides/benzamides leading to quinazolino[3,2-b]cinnoline or tryptanthrin derivatives.
Guo, Shenghai; Zhai, Jianhui; Fan, Xuesen; Organic & biomolecular chemistry 15 (2017) 1521–1529; doi:10.1039/c6ob02699k

data_7155460
_publ_section_title
;
 An I2-mediated cascade reaction of 2'-bromoacetophenones with
 benzohydrazides/benzamides leading to quinazolino[3,2-b]cinnoline or
 tryptanthrin derivatives.
;
_journal_issue                   6
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              1521
_journal_page_last               1529
_journal_paper_doi               10.1039/c6ob02699k
_journal_volume                  15
_journal_year                    2017
_chemical_formula_moiety         'C21 H13 N3 O2'
_chemical_formula_sum            'C21 H13 N3 O2'
_chemical_formula_weight         339.34
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2016-12-06 deposited with the CCDC.
2017-01-18 downloaded from the CCDC.
;
_cell_angle_alpha                64.336(15)
_cell_angle_beta                 72.042(17)
_cell_angle_gamma                88.506(18)
_cell_formula_units_Z            2
_cell_length_a                   7.617(12)
_cell_length_b                   10.617(17)
_cell_length_c                   11.452(18)
_cell_measurement_reflns_used    2193
_cell_measurement_temperature    295(2)
_cell_measurement_theta_max      27.323
_cell_measurement_theta_min      2.228
_cell_volume                     788(2)
_computing_cell_refinement
;
CrysAlis Pro (Agilent, 2013)
;
_computing_data_collection
;
CrysAlis Pro (Agilent, 2013)
;
_computing_data_reduction
;
CrysAlis Pro (Agilent, 2013)
;
_computing_molecular_graphics    '(K. Brandenburg, Diamond 3.1, 2009)'
_computing_publication_material  '(K. Brandenburg, Diamond 3.1, 2009)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      295(2)
_diffrn_detector_area_resol_mean 16.1954
_diffrn_measured_fraction_theta_full 0.985
_diffrn_measured_fraction_theta_max 0.985
_diffrn_measurement_device_type  'Xcalibur, Eos'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enhance (Mo) X-ray Source'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0232
_diffrn_reflns_av_sigmaI/netI    0.0392
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            6049
_diffrn_reflns_theta_full        27.42
_diffrn_reflns_theta_max         27.42
_diffrn_reflns_theta_min         2.09
_exptl_absorpt_coefficient_mu    0.095
_exptl_absorpt_correction_T_max  0.9841
_exptl_absorpt_correction_T_min  0.9822
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
; 
CrysAlis Pro (Agilent, 2013)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.430
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             352
_exptl_crystal_size_max          0.19
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.17
_refine_diff_density_max         0.338
_refine_diff_density_min         -0.382
_refine_diff_density_rms         0.088
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.053
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     235
_refine_ls_number_reflns         3309
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.053
_refine_ls_R_factor_all          0.0871
_refine_ls_R_factor_gt           0.0682
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1200P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1250
_refine_ls_wR_factor_ref         0.1672
_reflns_number_gt                2807
_reflns_number_total             3533
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c6ob02699k2.cif
_cod_data_source_block           zxy2_0m
_cod_depositor_comments          'Adding full bibliography for 7155460.cif.'
_cod_database_code               7155460