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_7154301
_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            'C27 H17 N O5'
_chemical_formula_weight         435.42
_chemical_name_common
'4-(2-(2-Hydroxy-5-methylbenzoyl)-8-methyl-4-oxo-4H-furo[3,2-c]chromen-3-yl)benzonitrile '
_chemical_name_systematic        5c
_space_group_IT_number           61
_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
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   17.409(3)
_cell_length_b                   11.222(2)
_cell_length_c                   21.848(4)
_cell_measurement_temperature    296(2)
_cell_volume                     4268.3(13)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.0374
_diffrn_reflns_av_sigmaI/netI    0.0171
_diffrn_reflns_limit_h_max       21
_diffrn_reflns_limit_h_min       -20
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            50267
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         2.34
_exptl_absorpt_coefficient_mu    0.094
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.355
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1808
_refine_diff_density_max         0.283
_refine_diff_density_min         -0.187
_refine_diff_density_rms         0.042
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.041
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     301
_refine_ls_number_reflns         4191
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.041
_refine_ls_R_factor_all          0.0732
_refine_ls_R_factor_gt           0.0493
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0651P)^2^+1.8032P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1280
_refine_ls_wR_factor_ref         0.1485
_reflns_number_gt                3012
_reflns_number_total             4191
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4ob02490g2.cif
_cod_data_source_block           a
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 

 Adding full bibliography for 7154300--7154301.cif.
;
_cod_original_cell_volume        4268.2(14)
_cod_original_sg_symbol_H-M      'Pbca '
_cod_database_code               7154301