Lewis Acid Catalyzed Regiospecific Cross-Dehydrative Coupling Reaction of 2-Furylcarbinols with β-Keto Amides or 4-Hydroxycoumarins: A Route to Furyl Enols.
Miao, Maozhong; Luo, Yi; Li, Hongli; Xu, Xin; Chen, Zhengkai; Xu, Jianfeng; Ren, Hongjun; The Journal of organic chemistry 81 (2016) 5228–5235; doi:10.1021/acs.joc.6b00734

data_4036863
_publ_section_title
;
 Lewis Acid Catalyzed Regiospecific Cross-Dehydrative Coupling Reaction of
 2-Furylcarbinols with \b-Keto Amides or 4-Hydroxycoumarins: A Route to
 Furyl Enols.
;
_journal_issue                   12
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              5228
_journal_page_last               5235
_journal_paper_doi               10.1021/acs.joc.6b00734
_journal_volume                  81
_journal_year                    2016
_chemical_formula_moiety         'C26 H18 O4'
_chemical_formula_sum            'C26 H18 O4'
_chemical_formula_weight         394.40
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 111.134(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.3383(5)
_cell_length_b                   20.1446(9)
_cell_length_c                   10.3452(5)
_cell_measurement_reflns_used    10919
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      27.4
_cell_measurement_theta_min      3.0
_cell_volume                     2009.59(17)
_computing_cell_refinement       'PROCESS-AUTO  (Rigaku,2006)'
_computing_data_collection       'PROCESS-AUTO  (Rigaku,2006)'
_computing_data_reduction        'CrystalStructure (Rigaku,2007)'
_computing_molecular_graphics    'Ortep3 for windows (Farrugia,1997)'
_computing_publication_material  'WinGX (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_detector_area_resol_mean 10.00
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Rigaku RAXIS-RAPID/ZJUG'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0445
_diffrn_reflns_av_sigmaI/netI    0.0367
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       26
_diffrn_reflns_limit_k_min       -26
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            19383
_diffrn_reflns_theta_full        27.45
_diffrn_reflns_theta_max         27.45
_diffrn_reflns_theta_min         3.13
_exptl_absorpt_coefficient_mu    0.088
_exptl_absorpt_correction_T_max  0.9725
_exptl_absorpt_correction_T_min  0.9460
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Higashi, T. (1995)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.304
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       chunk
_exptl_crystal_F_000             824
_exptl_crystal_size_max          0.53
_exptl_crystal_size_mid          0.46
_exptl_crystal_size_min          0.32
_refine_diff_density_max         0.132
_refine_diff_density_min         -0.137
_refine_diff_density_rms         0.032
_refine_ls_extinction_coef       0.027(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.001
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     273
_refine_ls_number_reflns         4580
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.001
_refine_ls_R_factor_all          0.0933
_refine_ls_R_factor_gt           0.0467
_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^)+(0.0587P)^2^+0.2182P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1082
_refine_ls_wR_factor_ref         0.1318
_reflns_number_gt                2589
_reflns_number_total             4580
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo6b00734_si_003.cif
_cod_data_source_block           wjy-1-9
_cod_original_cell_volume        2009.59(16)
_cod_database_code               4036863