Enantioselective Construction of Pyrrolidines by Palladium-Catalyzed Asymmetric [3 + 2] Cycloaddition of Trimethylenemethane with Imines
Barry M. Trost; Steven M. Silverman; Journal of the American Chemical Society 134 (2012) 4941–4954; doi:10.1021/ja210981a

data_4117641
_publ_contact_author_address     'Dept. of Chemistry, Stanford University'
_publ_contact_author_email       ssilverman@stanford.edu
_publ_contact_author_name        'Steve Silverman'
_publ_contact_author_phone       '858 761 2799'
_publ_section_title
;
 Enantioselective Construction of Pyrrolidines by Palladium-Catalyzed
 Asymmetric [3 + 2] Cycloaddition of Trimethylenemethane with Imines
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              4941
_journal_page_last               4954
_journal_paper_doi               10.1021/ja210981a
_journal_volume                  134
_journal_year                    2012
_chemical_formula_sum            'C52 H48 N8 O8 S4'
_chemical_formula_weight         1041.22
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 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                 114.522(6)
_cell_angle_gamma                90.00
_cell_formula_units_Z            1
_cell_length_a                   7.7604(13)
_cell_length_b                   9.8685(17)
_cell_length_c                   18.125(3)
_cell_measurement_reflns_used    5048
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      58.009
_cell_measurement_theta_min      4.810
_cell_volume                     1262.9(4)
_computing_cell_refinement       'Bruker SAINT v7.34'
_computing_data_collection       'Bruker APEX-II v2.1-4'
_computing_data_reduction        'Bruker SAINT v7.34'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector_area_resol_mean 83.33
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker APEX-II'
_diffrn_measurement_method       \w/2\q-scans
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0196
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       0
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            3014
_diffrn_reflns_theta_full        27.88
_diffrn_reflns_theta_max         27.88
_diffrn_reflns_theta_min         2.41
_exptl_absorpt_coefficient_mu    0.251
_exptl_absorpt_correction_T_max  0.7459
_exptl_absorpt_correction_T_min  0.6757
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.369
_exptl_crystal_description       plate
_exptl_crystal_F_000             544
_exptl_crystal_size_max          0.145
_exptl_crystal_size_mid          0.105
_exptl_crystal_size_min          0.045
_refine_diff_density_max         0.342
_refine_diff_density_min         -0.372
_refine_diff_density_rms         0.043
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.057
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     164
_refine_ls_number_reflns         3014
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.057
_refine_ls_R_factor_all          0.0443
_refine_ls_R_factor_gt           0.0360
_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^)+(0.0446P)^2^+0.4689P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0916
_refine_ls_wR_factor_ref         0.0966
_reflns_number_gt                2530
_reflns_number_total             3014
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja210981a_si_005.cif
_cod_data_source_block           stanu1001
_cod_database_code               4117641