Radical reactions with 3H-quinazolin-4-ones: synthesis of deoxyvasicinone, mackinazolinone, luotonin A, rutaecarpine and tryptanthrin.
Bowman, W. Russell; Elsegood, Mark R. J.; Stein, Tobias; Weaver, George W.; Organic & biomolecular chemistry 5 (2007) 103–113; doi:10.1039/b614075k

data_7151046
_publ_section_title
;
 Radical reactions with 3H-quinazolin-4-ones: synthesis of
 deoxyvasicinone, mackinazolinone, luotonin A, rutaecarpine and
 tryptanthrin.
;
_journal_issue                   1
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              103
_journal_page_last               113
_journal_paper_doi               10.1039/b614075k
_journal_volume                  5
_journal_year                    2007
_chemical_formula_moiety         'C16 H14 N2 O S'
_chemical_formula_sum            'C16 H14 N2 O S'
_chemical_formula_weight         282.35
_space_group_IT_number           9
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C -2yc'
_symmetry_space_group_name_H-M   'C 1 c 1'
_atom_sites_solution_hydrogens   'geom except H(2) coords freely refined'
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   'all non-H atoms found by direct methods'
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 97.047(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   4.6405(7)
_cell_length_b                   25.329(4)
_cell_length_c                   12.1910(17)
_cell_measurement_reflns_used    2505
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      27.77
_cell_measurement_theta_min      2.33
_cell_volume                     1422.1(4)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL and local programs'
_computing_structure_refinement  'Bruker SHELXTL'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.900
_diffrn_measurement_device_type  'Bruker SMART 1000 CCD diffractometer'
_diffrn_measurement_method       '\w rotation with narrow frames'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0368
_diffrn_reflns_av_sigmaI/netI    0.0670
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       32
_diffrn_reflns_limit_k_min       -32
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            5350
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         28.73
_diffrn_reflns_theta_min         1.61
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.224
_exptl_absorpt_correction_T_max  0.996
_exptl_absorpt_correction_T_min  0.885
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS v2.10, Sheldrick, G.M. (2003)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.319
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       lath
_exptl_crystal_F_000             592
_exptl_crystal_size_max          0.56
_exptl_crystal_size_mid          0.16
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.432
_refine_diff_density_min         -0.202
_refine_diff_density_rms         0.052
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.13(13)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.026
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     184
_refine_ls_number_reflns         3005
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.026
_refine_ls_R_factor_all          0.0837
_refine_ls_R_factor_gt           0.0602
_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^)+(0.1005P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1444
_refine_ls_wR_factor_ref         0.1590
_reflns_number_gt                2351
_reflns_number_total             3005
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            b614075k.txt
_cod_data_source_block           30
_cod_original_sg_symbol_H-M      Cc
_cod_database_code               7151046