Application of a New Chiral Phosphepine to the Catalytic Asymmetric Synthesis of Highly Functionalized Cyclopentenes That Bear an Array of Heteroatom-Substituted Quaternary Stereocenters
Yuji Fujiwara; Gregory C. Fu; Journal of the American Chemical Society 133 (2011) 12293–12297; doi:10.1021/ja2049012

data_4106518
_publ_section_title
;
 Application of a New Chiral Phosphepine to the Catalytic Asymmetric
 Synthesis of Highly Functionalized Cyclopentenes That Bear an Array of
 Heteroatom-Substituted Quaternary Stereocenters
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              12293
_journal_page_last               12297
_journal_paper_doi               10.1021/ja2049012
_journal_volume                  133
_journal_year                    2011
_chemical_absolute_configuration ad
_chemical_formula_sum            'C31 H36 N2 O4'
_chemical_formula_weight         500.62
_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                   8.3572(3)
_cell_length_b                   12.4724(4)
_cell_length_c                   26.0754(8)
_cell_measurement_reflns_used    9862
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      67.81
_cell_measurement_theta_min      3.39
_cell_volume                     2717.95(16)
_computing_cell_refinement       'SAINT 7.46A (Bruker-AXS, 2010)'
_computing_data_collection       'APEX2 v2010.7.0 (Bruker-AXS, 2010)'
_computing_data_reduction        'SAINT 7.46A (Bruker-AXS, 2010)'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 8.3
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Bruker Smart APEX2 CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0298
_diffrn_reflns_av_sigmaI/netI    0.0180
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       31
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            29588
_diffrn_reflns_theta_full        67.73
_diffrn_reflns_theta_max         67.73
_diffrn_reflns_theta_min         3.39
_exptl_absorpt_coefficient_mu    0.643
_exptl_absorpt_correction_T_max  0.9096
_exptl_absorpt_correction_T_min  0.8557
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2009)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.223
_exptl_crystal_description       block
_exptl_crystal_F_000             1072
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.188
_refine_diff_density_min         -0.131
_refine_diff_density_rms         0.030
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.02(12)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.037
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     355
_refine_ls_number_reflns         4852
_refine_ls_number_restraints     31
_refine_ls_restrained_S_all      1.047
_refine_ls_R_factor_all          0.0256
_refine_ls_R_factor_gt           0.0254
_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^)+(0.0337P)^2^+0.5753P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0653
_refine_ls_wR_factor_ref         0.0657
_reflns_number_gt                4813
_reflns_number_total             4852
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja2049012_si_003.cif
_cod_data_source_block           x11029
_cod_database_code               4106518