Phosphine-catalyzed domino reaction: highly stereoselective synthesis of trans-2,3-dihydrobenzofurans from salicyl N-thiophosphinyl imines and allylic carbonates.
Xie, Peizhong; Huang, You; Chen, Ruyu; Organic letters 12 (2010) 3768–3771; doi:10.1021/ol101611v

data_1503172
_publ_section_title
;
 Phosphine-catalyzed domino reaction: highly stereoselective synthesis of
 trans-2,3-dihydrobenzofurans from salicyl N-thiophosphinyl imines and
 allylic carbonates.
;
_journal_issue                   17
_journal_name_full               'Organic letters'
_journal_page_first              3768
_journal_page_last               3771
_journal_paper_doi               10.1021/ol101611v
_journal_volume                  12
_journal_year                    2010
_chemical_formula_moiety         'C31 H27 Br N O3 P S'
_chemical_formula_sum            'C31 H27 Br N O3 P S'
_chemical_formula_weight         604.48
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.2600(10)
_cell_length_b                   8.4860(10)
_cell_length_c                   30.754(3)
_cell_measurement_reflns_used    7689
_cell_measurement_temperature    113(2)
_cell_measurement_theta_max      28.20
_cell_measurement_theta_min      2.10
_cell_volume                     2677.6(5)
_computing_cell_refinement       'CrystalClear-SM Expert 2.0 r2'
_computing_data_collection       'CrystalClear-SM Expert 2.0 r2 (Rigaku, 2009)'
_computing_data_reduction        'CrystalClear-SM Expert 2.0 r2'
_computing_molecular_graphics    'CrystalStructure 4.0'
_computing_publication_material  'CrystalStructure 4.0 (Rigaku, 2009)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      113(2)
_diffrn_detector_area_resol_mean 14.222
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Rigaku Saturn724 CCD'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  multilayer
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.1079
_diffrn_reflns_av_sigmaI/netI    0.1422
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       40
_diffrn_reflns_limit_l_min       -40
_diffrn_reflns_number            19452
_diffrn_reflns_theta_full        27.88
_diffrn_reflns_theta_max         27.88
_diffrn_reflns_theta_min         2.09
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.708
_exptl_absorpt_correction_T_max  0.7717
_exptl_absorpt_correction_T_min  0.6847
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   CrystalClear
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.499
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1240
_exptl_crystal_size_max          0.24
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.759
_refine_diff_density_min         -1.037
_refine_diff_density_rms         0.095
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.012(8)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.842
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     348
_refine_ls_number_reflns         6367
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.842
_refine_ls_R_factor_all          0.0637
_refine_ls_R_factor_gt           0.0538
_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^)+(0.0000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0940
_refine_ls_wR_factor_ref         0.1010
_reflns_number_gt                5325
_reflns_number_total             6367
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol101611v_si_003.cif
_cod_data_source_block           shelxl
_cod_database_code               1503172