Ag-Catalyzed Diastereo- and Enantioselective Vinylogous Mannich Reactions of α-Ketoimine Esters. Development of a Method and Investigation of its Mechanism
Laura C. Wieland; Erika M. Vieira; Marc L. Snapper; Amir H. Hoveyda; Journal of the American Chemical Society 131 (2009) 570–576; doi:10.1021/ja8062315

data_4103748
_publ_section_title
;
 Ag-Catalyzed Diastereo- and Enantioselective Vinylogous Mannich Reactions
 of \a-Ketoimine Esters. Development of a Method and Investigation of its
 Mechanism
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              570
_journal_page_last               576
_journal_paper_doi               10.1021/ja8062315
_journal_volume                  131
_journal_year                    2009
_chemical_formula_sum            'C70 H79 Ag N4 O7 P2'
_chemical_formula_weight         1258.18
_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                   17.451(4)
_cell_length_b                   17.675(5)
_cell_length_c                   21.505(6)
_cell_measurement_reflns_used    997
_cell_measurement_temperature    193(2)
_cell_measurement_theta_max      21.64
_cell_measurement_theta_min      2.45
_cell_volume                     6633(3)
_computing_cell_refinement       'SMART (BRUKER, V5.625, 2001)'
_computing_data_collection       'ASTRO (BRUKER, V5.007, 1997)'
_computing_data_reduction        'SAINT (BRUKER, V6.22, 2001)'
_computing_molecular_graphics    'SHELXTL (BRUKER, 2000, V6.1)'
_computing_publication_material  'XCIF (Sheldrick and BRUKER, 1997, V5.1)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      193(2)
_diffrn_detector_area_resol_mean 836.6
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker CCD'
_diffrn_measurement_method       '\w, 0.3 deg'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0218
_diffrn_reflns_av_sigmaI/netI    0.0253
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            42921
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.49
_diffrn_standards_decay_%        <1
_diffrn_standards_interval_count 0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.406
_exptl_absorpt_correction_T_max  0.9605
_exptl_absorpt_correction_T_min  0.9528
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.260
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Rhobohedral
_exptl_crystal_F_000             2640
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.936
_refine_diff_density_min         -0.350
_refine_diff_density_rms         0.056
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.024(14)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.029
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     740
_refine_ls_number_reflns         11670
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.029
_refine_ls_R_factor_all          0.0352
_refine_ls_R_factor_gt           0.0316
_refine_ls_shift/su_max          0.008
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0624P)^2^+1.3695P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0861
_refine_ls_wR_factor_ref         0.0895
_reflns_number_gt                10972
_reflns_number_total             11670
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja8062315_si_004.cif
_cod_data_source_block           bc106
_cod_database_code               4103748