Direct synthesis of functional azaxanthones by using a domino three-component reaction.
Yan, Jianwei; Cheng, Ming; Hu, Feng; Hu, Youhong; Organic letters 14 (2012) 3206–3209; doi:10.1021/ol3013099

data_1507851
_publ_section_title
;
 Direct synthesis of functional azaxanthones by using a domino
 three-component reaction.
;
_journal_issue                   12
_journal_name_full               'Organic letters'
_journal_page_first              3206
_journal_page_last               3209
_journal_paper_doi               10.1021/ol3013099
_journal_volume                  14
_journal_year                    2012
_chemical_formula_sum            'C18 H12 N2 O3'
_chemical_formula_weight         304.30
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_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
_cell_angle_alpha                90.00
_cell_angle_beta                 102.129(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   6.8449(6)
_cell_length_b                   14.8828(12)
_cell_length_c                   13.9266(11)
_cell_measurement_reflns_used    2056
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      55.328
_cell_measurement_theta_min      5.984
_cell_volume                     1387.1(2)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0196
_diffrn_reflns_av_sigmaI/netI    0.0252
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            7429
_diffrn_reflns_theta_full        25.99
_diffrn_reflns_theta_max         25.99
_diffrn_reflns_theta_min         2.03
_exptl_absorpt_coefficient_mu    0.101
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.85935
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.457
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             632
_exptl_crystal_size_max          0.325
_exptl_crystal_size_mid          0.267
_exptl_crystal_size_min          0.213
_refine_diff_density_max         0.211
_refine_diff_density_min         -0.231
_refine_diff_density_rms         0.073
_refine_ls_extinction_coef       0.0085(14)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.035
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     210
_refine_ls_number_reflns         2727
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.035
_refine_ls_R_factor_all          0.0609
_refine_ls_R_factor_gt           0.0465
_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^)+(0.0723P)^2^+0.0591P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1146
_refine_ls_wR_factor_ref         0.1260
_reflns_number_gt                2003
_reflns_number_total             2727
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol3013099_si_001.cif
_cod_data_source_block           cd211366
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 

 Adding full bibliography for 1507851--1507852.cif.
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_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               1507851