Asymmetric synthesis of trans-dihydroarylfurans in a Friedel-Crafts/substitution domino reaction under squaramide catalysis.
Jarava-Barrera, Carlos; Esteban, Francisco; Navarro-Ranninger, Carmen; Parra, Alejandro; Alemán, José; Chemical communications (Cambridge, England) 49 (2013) 2001–2003; doi:10.1039/c2cc38534a

data_7112375
_publ_section_title
;
 Asymmetric synthesis of trans-dihydroarylfurans in a
 Friedel-Crafts/substitution domino reaction under squaramide catalysis.
;
_journal_issue                   20
_journal_name_full
'Chemical communications (Cambridge, England)'
_journal_page_first              2001
_journal_page_last               2003
_journal_paper_doi               10.1039/c2cc38534a
_journal_volume                  49
_journal_year                    2013
_chemical_formula_sum            'C18 H12 Br N O3'
_chemical_formula_weight         370.20
_chemical_name_common            CJ142
_space_group_crystal_system      triclinic
_space_group_IT_number           1
_space_group_name_Hall           'P 1'
_space_group_name_H-M_alt        'P 1'
_symmetry_space_group_name_Hall  'P 1'
_symmetry_space_group_name_H-M   'P 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                110.058(4)
_cell_angle_beta                 97.022(4)
_cell_angle_gamma                115.079(3)
_cell_formula_units_Z            2
_cell_length_a                   9.8447(7)
_cell_length_b                   9.9217(7)
_cell_length_c                   10.3511(13)
_cell_measurement_reflns_used    3798
_cell_measurement_temperature    296.(2)
_cell_measurement_theta_max      20.1731
_cell_measurement_theta_min      2.4063
_cell_volume                     816.53(14)
_computing_cell_refinement       'SAINT V7.68A (Bruker AXS, 2009)'
_computing_data_collection       'Bruker Instrument Service v2010.9.0.0'
_computing_data_reduction        'SAINT V7.68A (Bruker AXS, 2009)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296.(2)
_diffrn_detector_area_resol_mean 8.3333
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0349
_diffrn_reflns_av_sigmaI/netI    0.0535
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -12
_diffrn_reflns_number            14613
_diffrn_reflns_theta_full        25.37
_diffrn_reflns_theta_max         25.37
_diffrn_reflns_theta_min         2.21
_exptl_absorpt_coefficient_mu    2.531
_exptl_absorpt_correction_T_max  0.79
_exptl_absorpt_correction_T_min  0.64
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colourless-pink
_exptl_crystal_density_diffrn    1.506
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             372
_exptl_crystal_size_max          0.210
_exptl_crystal_size_mid          0.170
_exptl_crystal_size_min          0.100
_refine_diff_density_max         0.420
_refine_diff_density_min         -0.484
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.009(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.019
_refine_ls_hydrogen_treatment    refxyz
_refine_ls_matrix_type           full
_refine_ls_number_parameters     415
_refine_ls_number_reflns         5606
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      1.019
_refine_ls_R_factor_all          0.0798
_refine_ls_R_factor_gt           0.0402
_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^)+(0.0809P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0993
_refine_ls_wR_factor_ref         0.1373
_reflns_number_gt                3831
_reflns_number_total             5606
_reflns_threshold_expression     >2sigma(I)
_cod_duplicate_entry             7108904
_cod_data_source_file            c2cc38534a.txt
_cod_data_source_block           I
_cod_original_cell_volume        816.53(13)
_cod_database_code               7112375