Visible-Light-Mediated Reaction: Synthesis of Quinazolinones from 1,2-Dihydroquinazoline 3-Oxides
Wu, Chun-Ku; Yang, Ding-Yah; RSC Adv.  (2016) –; doi:10.1039/C6RA13972H

data_7225771
_publ_section_title
;
 Visible-Light-Mediated Reaction: Synthesis of Quinazolinones from
 1,2-Dihydroquinazoline 3-Oxides
;
_journal_name_full               'RSC Adv.'
_journal_paper_doi               10.1039/C6RA13972H
_journal_year                    2016
_chemical_formula_moiety         'C15 H14 N2 O'
_chemical_formula_sum            'C15 H14 N2 O'
_chemical_formula_weight         238.28
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2016-04-30 deposited with the CCDC.
2016-06-28 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 98.092(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.2999(6)
_cell_length_b                   19.429(2)
_cell_length_c                   9.8817(10)
_cell_measurement_reflns_used    1309
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      28.2750
_cell_measurement_theta_min      3.4130
_cell_volume                     1197.5(2)
_computing_cell_refinement
; 
CrysAlis RED, Oxford Diffraction Ltd., 
Version 1.171.32.29 (release 10-06-2008 CrysAlis171 .NET) 
(compiled Jun 10 2008,16:49:55) 
;
_computing_data_collection
; 
CrysAlis CCD, Oxford Diffraction Ltd., 
Version 1.171.32.29 (release 10-06-2008 CrysAlis171 .NET) 
(compiled Jun 10 2008,16:49:55) 
;
_computing_data_reduction
; 
CrysAlis RED, Oxford Diffraction Ltd., 
Version 1.171.32.29 (release 10-06-2008 CrysAlis171 .NET) 
(compiled Jun 10 2008,16:49:55) 
;
_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      150(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.851
_diffrn_measurement_device_type  'CCD detector'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0353
_diffrn_reflns_av_sigmaI/netI    0.0611
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -26
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            5033
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         29.17
_diffrn_reflns_theta_min         2.95
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.084
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.92939
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
; 
CrysAlisPro, Agilent Technologies, 
Version 1.171.36.24 (release 03-12-2012 CrysAlis171 .NET) 
(compiled Dec  3 2012,18:21:49) 
Empirical absorption correction using spherical harmonics, 
 implemented in SCALE3 ABSPACK scaling algorithm. 
;
_exptl_crystal_colour            'Light yellow'
_exptl_crystal_density_diffrn    1.322
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       parallelepiped
_exptl_crystal_F_000             504
_exptl_crystal_size_max          0.44
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.22
_refine_diff_density_max         0.570
_refine_diff_density_min         -0.310
_refine_diff_density_rms         0.058
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.040
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     163
_refine_ls_number_reflns         2751
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.040
_refine_ls_R_factor_all          0.0911
_refine_ls_R_factor_gt           0.0634
_refine_ls_shift/su_max          0.022
_refine_ls_shift/su_mean         0.003
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0705P)^2^+0.6307P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1512
_refine_ls_wR_factor_ref         0.1741
_reflns_number_gt                1974
_reflns_number_total             2751
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c6ra13972h2.cif
_cod_data_source_block           ck290
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7225771