Copper(ii) bromide-catalyzed intramolecular decarboxylative functionalization to form a C(sp(3))-O bond for the synthesis of furo[3,2-c]coumarins.
Zhang, W. L.; Yue, S. N.; Shen, Y. M.; Hu, H. Y.; Meng, Q.-H.; Wu, H.; Liu, Y.; Organic & biomolecular chemistry 13 (2015) 3602–3609; doi:10.1039/c4ob02490g

data_7154300
_publ_section_title
;
 Copper(ii) bromide-catalyzed intramolecular decarboxylative
 functionalization to form a C(sp(3))-O bond for the synthesis of
 furo[3,2-c]coumarins.
;
_journal_issue                   12
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              3602
_journal_page_last               3609
_journal_paper_doi               10.1039/c4ob02490g
_journal_volume                  13
_journal_year                    2015
_chemical_formula_sum            'C24 H13 Cl O5'
_chemical_formula_weight         416.79
_chemical_name_common
3-(4-Chlorophenyl)-2-(2-hydroxybenzoyl)-4H-furo[3,2-c]chromen-4-one
_chemical_name_systematic        4c
_space_group_IT_number           14
_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
_audit_update_record
;
2014-10-01 deposited with the CCDC.
2015-01-20 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 91.878(12)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.644(3)
_cell_length_b                   14.685(2)
_cell_length_c                   11.1346(19)
_cell_measurement_temperature    296(2)
_cell_volume                     1902.9(6)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_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  0.0952
_diffrn_reflns_av_sigmaI/netI    0.0850
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            14881
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         2.30
_exptl_absorpt_coefficient_mu    0.236
_exptl_crystal_colour            Yellow
_exptl_crystal_density_diffrn    1.455
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             856
_exptl_crystal_recrystallization_method 'Re-crystallisation from solvent: '
_exptl_crystal_size_max          0.3
_exptl_crystal_size_mid          0.2
_exptl_crystal_size_min          0.2
_refine_diff_density_max         0.248
_refine_diff_density_min         -0.458
_refine_diff_density_rms         0.081
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.010
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     272
_refine_ls_number_reflns         3715
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.010
_refine_ls_R_factor_all          0.1312
_refine_ls_R_factor_gt           0.0676
_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^)+(0.1170P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1595
_refine_ls_wR_factor_ref         0.2110
_reflns_number_gt                2035
_reflns_number_total             3715
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4ob02490g2.cif
_cod_data_source_block           a
_cod_depositor_comments
'Adding full bibliography for 7154300--7154301.cif.'
_cod_original_cell_volume        1902.8(6)
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7154300