Synthesis of Furan-Annelated BINOL Derivatives: Acid-Catalyzed Cyclization Induces Partial Racemization.
Octa-Smolin, Frescilia; van der Vight, Felix; Yadav, Rohan; Bhangu, Jasmine; Soloviova, Kateryna; Wölper, Christoph; Daniliuc, Constantin G.; Strassert, Cristian A.; Somnitz, Holger; Jansen, Georg; Niemeyer, Jochen; The Journal of organic chemistry 83 (2018) 14568–14587; doi:10.1021/acs.joc.8b02353

data_4035697
_publ_section_title
;
 Synthesis of Furan-Annelated BINOL Derivatives: Acid-Catalyzed
 Cyclization Induces Partial Racemization.
;
_journal_issue                   23
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              14568
_journal_page_last               14587
_journal_paper_doi               10.1021/acs.joc.8b02353
_journal_volume                  83
_journal_year                    2018
_chemical_formula_sum            'C31 H24 O2'
_chemical_formula_weight         428.50
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_atom_sites_solution_hydrogens   mixed
_cell_angle_alpha                87.862(3)
_cell_angle_beta                 76.700(3)
_cell_angle_gamma                79.546(3)
_cell_formula_units_Z            4
_cell_length_a                   11.5614(5)
_cell_length_b                   12.8155(6)
_cell_length_c                   16.0415(7)
_cell_measurement_reflns_used    4899
_cell_measurement_temperature    100.(2)
_cell_measurement_theta_max      66.4934
_cell_measurement_theta_min      3.5071
_cell_volume                     2274.62(18)
_computing_cell_refinement       'SAINT V8.37A (Bruker AXS Inc., 2015)'
_computing_data_collection       'APEX3 v2016.1-0 (Bruker AXS Inc., 2016)'
_computing_data_reduction        'SAINT V8.37A (Bruker AXS Inc., 2015)'
_computing_molecular_graphics    'APEX3 v2016.1-0 (Bruker AXS Inc., 2016)'
_computing_publication_material  'APEX3 v2016.1-0 (Bruker AXS Inc., 2016)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXL-2014/7 (Sheldrick, 2014)'
_diffrn_ambient_temperature      100.(2)
_diffrn_detector_area_resol_mean 8.3333
_diffrn_measured_fraction_theta_full 0.987
_diffrn_measured_fraction_theta_max 0.987
_diffrn_measurement_device_type  'Kappa CCD APEXII'
_diffrn_measurement_method       'phi / omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0710
_diffrn_reflns_av_unetI/netI     0.0680
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            32752
_diffrn_reflns_theta_full        66.73
_diffrn_reflns_theta_max         66.73
_diffrn_reflns_theta_min         3.99
_diffrn_source                   'fine-focus sealed tube'
_diffrn_source_type              'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.600
_exptl_absorpt_correction_T_max  0.99
_exptl_absorpt_correction_T_min  0.82
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
Bruker AXS (2014). SADABS, Version 2014/5, Bruker AXS Inc., Madison, Wisconsin,
USA.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.251
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             904
_exptl_crystal_size_max          0.180
_exptl_crystal_size_mid          0.120
_exptl_crystal_size_min          0.020
_refine_diff_density_max         0.483
_refine_diff_density_min         -0.289
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.048
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     603
_refine_ls_number_reflns         7953
_refine_ls_number_restraints     38
_refine_ls_restrained_S_all      1.052
_refine_ls_R_factor_all          0.0982
_refine_ls_R_factor_gt           0.0658
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0956P)^2^+0.7555P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1722
_refine_ls_wR_factor_ref         0.1943
_reflns_number_gt                5337
_reflns_number_total             7953
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo8b02353_si_001.cif
_cod_data_source_block           dan8913
_cod_database_code               4035697
_shelx_res_checksum              65745
_shelx_hkl_checksum              69717