Oxidative radical skeletal rearrangement induced by molecular oxygen: synthesis of quinazolinones.
Wang, Yi-Feng; Zhang, Feng-Lian; Chiba, Shunsuke; Organic letters 15 (2013) 2842–2845; doi:10.1021/ol4011745

data_1512110
_publ_contact_author
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Dr Shunsuke Chiba
Division of Chemistry and Biological Chemistry
School of Physical and Mathematical Sciences
Nanyang Technological University
21 Nanyang Link
Singapore 637371
Singapore
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_publ_section_title
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 Oxidative radical skeletal rearrangement induced by molecular oxygen:
 synthesis of quinazolinones.
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_journal_issue                   11
_journal_name_full               'Organic letters'
_journal_page_first              2842
_journal_page_last               2845
_journal_paper_doi               10.1021/ol4011745
_journal_volume                  15
_journal_year                    2013
_chemical_formula_moiety         'C30 H23 N3 O'
_chemical_formula_sum            'C30 H23 N3 O'
_chemical_formula_weight         441.51
_space_group_IT_number           33
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 21'
_atom_sites_solution_hydrogens   geom
_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                   36.9495(8)
_cell_length_b                   10.6830(2)
_cell_length_c                   5.61100(10)
_cell_measurement_reflns_used    6516
_cell_measurement_temperature    103(2)
_cell_measurement_theta_max      30.09
_cell_measurement_theta_min      2.52
_cell_volume                     2214.84(7)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      103(2)
_diffrn_measured_fraction_theta_full 0.978
_diffrn_measured_fraction_theta_max 0.945
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
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_diffrn_reflns_limit_h_max       53
_diffrn_reflns_limit_h_min       -53
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -5
_diffrn_reflns_number            25845
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         31.24
_diffrn_reflns_theta_min         1.10
_exptl_absorpt_coefficient_mu    0.081
_exptl_absorpt_correction_T_max  0.9951
_exptl_absorpt_correction_T_min  0.9682
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.324
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             928
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.08
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_refine_diff_density_max         0.462
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_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     350
_refine_ls_number_reflns         3726
_refine_ls_number_restraints     218
_refine_ls_restrained_S_all      1.166
_refine_ls_R_factor_all          0.0641
_refine_ls_R_factor_gt           0.0488
_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^)+(0.0910P)^2^+0.2352P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1272
_refine_ls_wR_factor_ref         0.1536
_reflns_number_gt                3267
_reflns_number_total             3726
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol4011745_si_005.cif
_cod_data_source_block           2u
_cod_depositor_comments
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The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.3.1 from 2005-06-27.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_H-M      Pna2(1)
_cod_database_code               1512110