A one-pot hypoiodite catalysed oxidative cycloetherification approach to benzoxazoles
Siva Senthil Kumar Boominathan; Wan-Ping Hu; Gopal Chandru Senadi; Jaya Kishore Vandavasi; Jeh-Jeng Wang; Chem.Commun. 50 (2014) 6726–; doi:10.1039/C4CC02425G

data_7113993
_publ_section_title
;
 A one-pot hypoiodite catalysed oxidative cycloetherification approach to
 benzoxazoles
;
_journal_name_full               Chem.Commun.
_journal_page_first              6726
_journal_paper_doi               10.1039/C4CC02425G
_journal_volume                  50
_journal_year                    2014
_chemical_formula_moiety         'C15 H11 N O2'
_chemical_formula_sum            'C15 H11 N O2'
_chemical_formula_weight         237.25
_space_group_IT_number           13
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      13
_symmetry_space_group_name_Hall  '-P 2yc'
_symmetry_space_group_name_H-M   'P 1 2/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                 97.263(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   12.1035(4)
_cell_length_b                   14.2703(6)
_cell_length_c                   13.6727(6)
_cell_measurement_temperature    296(2)
_cell_volume                     2342.61(16)
_computing_cell_refinement       'SAINT V7.34A (Bruker AXS, 2006)'
_computing_data_collection       'APEX2 (Bruker AXS, 2010)'
_computing_data_reduction        'SAINT V7.34A (Bruker AXS, 2006)'
_computing_molecular_graphics    'SHELXTL (Sheldrick, 2008)'
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \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  0.0366
_diffrn_reflns_av_sigmaI/netI    0.0272
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            30849
_diffrn_reflns_theta_full        26.40
_diffrn_reflns_theta_max         26.40
_diffrn_reflns_theta_min         2.22
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.090
_exptl_absorpt_correction_T_max  0.9657
_exptl_absorpt_correction_T_min  0.9580
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS V2012/1 (Bruker AXS Inc.)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.345
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       parallelepiped
_exptl_crystal_F_000             992
_exptl_crystal_size_max          0.48
_exptl_crystal_size_mid          0.47
_exptl_crystal_size_min          0.39
_refine_diff_density_max         0.243
_refine_diff_density_min         -0.229
_refine_diff_density_rms         0.047
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.018
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     327
_refine_ls_number_reflns         4789
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.018
_refine_ls_R_factor_all          0.1009
_refine_ls_R_factor_gt           0.0640
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0942P)^2^+1.4085P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1733
_refine_ls_wR_factor_ref         0.2084
_reflns_number_gt                3127
_reflns_number_total             4789
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4cc02425g2.cif
_cod_data_source_block           sivapr357
_cod_original_sg_symbol_H-M      'P 2/c'
_cod_database_code               7113993