Convenient construction of dibenzo[b,d]furanes and 2,6-diaryl-4-(2-hydroxyphenyl)pyridines via domino reaction of pyridinium ylides with 2-aryl-3-nitrochromenes
Sun, Jing; Jiang, Wang; Yan, Chao-Guo; Organic Chemistry Frontiers 6 (2019) 1428–; doi:10.1039/C9QO00079H

data_1554732
_publ_section_title
;
 Convenient construction of dibenzo[b,d]furanes and
 2,6-diaryl-4-(2-hydroxyphenyl)pyridines via domino reaction of pyridinium
 ylides with 2-aryl-3-nitrochromenes
;
_journal_issue                   9
_journal_name_full               'Organic Chemistry Frontiers'
_journal_page_first              1428
_journal_paper_doi               10.1039/C9QO00079H
_journal_volume                  6
_journal_year                    2019
_chemical_formula_moiety         'C32 H21 Br O2'
_chemical_formula_sum            'C32 H21 Br O2'
_chemical_formula_weight         517.40
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/7
_audit_update_record
;
2019-01-17 deposited with the CCDC.	2019-03-05 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 114.940(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.6020(12)
_cell_length_b                   20.505(2)
_cell_length_c                   12.2951(13)
_cell_measurement_reflns_used    7477
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      26.40
_cell_measurement_theta_min      2.34
_cell_volume                     2423.6(4)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXS-97 (Sheldrick 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.984
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0396
_diffrn_reflns_av_unetI/netI     0.0487
_diffrn_reflns_Laue_measured_fraction_full 0.992
_diffrn_reflns_Laue_measured_fraction_max 0.984
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -26
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            21244
_diffrn_reflns_point_group_measured_fraction_full 0.992
_diffrn_reflns_point_group_measured_fraction_max 0.984
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         27.554
_diffrn_reflns_theta_min         2.118
_exptl_absorpt_coefficient_mu    1.724
_exptl_absorpt_correction_T_max  0.708
_exptl_absorpt_correction_T_min  0.668
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.418
_exptl_crystal_description       block
_exptl_crystal_F_000             1056
_exptl_crystal_size_max          0.240
_exptl_crystal_size_mid          0.220
_exptl_crystal_size_min          0.200
_refine_diff_density_max         0.578
_refine_diff_density_min         -0.575
_refine_diff_density_rms         0.051
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.026
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     317
_refine_ls_number_reflns         5493
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.026
_refine_ls_R_factor_all          0.0894
_refine_ls_R_factor_gt           0.0454
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0437P)^2^+0.9174P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0939
_refine_ls_wR_factor_ref         0.1076
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3503
_reflns_number_total             5493
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c9qo00079h2.cif
_cod_data_source_block           3l
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               1554732
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.682
_shelx_estimated_absorpt_t_max   0.724
_shelx_res_checksum              59068
_shelx_hkl_checksum              19823