Expeditive access to 2-substituted 4H-pyrido[1,3]oxazin-4-ones via an intramolecular O-arylation.
Slowinski, Franck; Ben Ayad, Omar; Ziyaret, Ozge; Botuha, Candice; Le Falher, Laetitia; Aouane, Kamel; Thorimbert, Serge; Organic letters 15 (2013) 3494–3497; doi:10.1021/ol401516e

data_1556213
_publ_section_title
;
 Expeditive access to 2-substituted 4H-pyrido[1,3]oxazin-4-ones via an
 intramolecular O-arylation.
;
_journal_issue                   14
_journal_name_full               'Organic letters'
_journal_page_first              3494
_journal_page_last               3497
_journal_paper_doi               10.1021/ol401516e
_journal_volume                  15
_journal_year                    2013
_chemical_formula_moiety         'C13 H8 N2 O2'
_chemical_formula_sum            'C13 H8 N2 O2'
_chemical_formula_weight         224.21
_space_group_IT_number           61
_space_group_name_Hall           '-P 2ac 2ab'
_space_group_name_H-M_alt        'P b c a'
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_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            8
_cell_length_a                   12.6783(15)
_cell_length_b                   7.0990(7)
_cell_length_c                   23.032(2)
_cell_measurement_reflns_used    3167
_cell_measurement_temperature    200(1)
_cell_measurement_theta_max      27.32
_cell_measurement_theta_min      3.22
_cell_volume                     2073.0(4)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_publication_material  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SUPERFLIP (Palatinus & Chapuis, 2007)'
_diffrn_ambient_temperature      200(2)
_diffrn_detector_area_resol_mean 8.3333
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  'curved graphite'
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0512
_diffrn_reflns_av_sigmaI/netI    0.0426
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            14799
_diffrn_reflns_theta_full        27.55
_diffrn_reflns_theta_max         27.55
_diffrn_reflns_theta_min         1.77
_diffrn_standards_decay_%        0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.100
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.5822
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
; 
R.H. Blessing, Acta Cryst. (1995), A51, 33-38
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.437
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       bar
_exptl_crystal_F_000             928
_exptl_crystal_size_max          0.5
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.582
_refine_diff_density_min         -0.333
_refine_diff_density_rms         0.088
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.086
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     154
_refine_ls_number_reflns         2389
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.086
_refine_ls_R_factor_all          0.1095
_refine_ls_R_factor_gt           0.0735
_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^)+(0.1124P)^2^+1.4731P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1947
_refine_ls_wR_factor_ref         0.2257
_reflns_number_gt                1543
_reflns_number_total             2389
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            llf-180-01.cif
_cod_data_source_block           llf-180-01
_cod_original_cell_volume        2072.9(4)
_cod_database_code               1556213