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_7225769
_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         'C16 H16 N2 O'
_chemical_formula_sum            'C16 H16 N2 O'
_chemical_formula_weight         252.31
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_Int_Tables_number      2
_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
;
2016-04-30 deposited with the CCDC.
2016-06-28 downloaded from the CCDC.
;
_cell_angle_alpha                88.828(7)
_cell_angle_beta                 73.814(8)
_cell_angle_gamma                64.126(9)
_cell_formula_units_Z            2
_cell_length_a                   8.5162(8)
_cell_length_b                   8.7051(8)
_cell_length_c                   9.9918(9)
_cell_measurement_reflns_used    1951
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      29.1503
_cell_measurement_theta_min      2.7810
_cell_volume                     635.66(12)
_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 0.998
_diffrn_measured_fraction_theta_max 0.847
_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  0.0215
_diffrn_reflns_av_sigmaI/netI    0.0380
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            5683
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         29.21
_diffrn_reflns_theta_min         2.79
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.084
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.99544
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
; 
CrysAlisPro, Agilent Technologies, 
Version 1.171.35.21 (release 20-01-2012 CrysAlis171 .NET) 
(compiled Jan 23 2012,18:06:46) 
Empirical absorption correction using spherical harmonics, 
 implemented in SCALE3 ABSPACK scaling algorithm. 
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.318
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       parallelepiped
_exptl_crystal_F_000             268
_exptl_crystal_size_max          0.48
_exptl_crystal_size_mid          0.42
_exptl_crystal_size_min          0.23
_refine_diff_density_max         0.480
_refine_diff_density_min         -0.408
_refine_diff_density_rms         0.056
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.032
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     172
_refine_ls_number_reflns         2928
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.032
_refine_ls_R_factor_all          0.0678
_refine_ls_R_factor_gt           0.0544
_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^)+(0.0707P)^2^+0.3892P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1418
_refine_ls_wR_factor_ref         0.1521
_reflns_number_gt                2359
_reflns_number_total             2928
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c6ra13972h2.cif
_cod_data_source_block           ck135
_cod_original_cell_volume        635.66(10)
_cod_database_code               7225769