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_4103750
_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_absolute_configuration ad
_chemical_formula_moiety         'C15 H17 N O5'
_chemical_formula_sum            'C15 H17 N O5'
_chemical_formula_weight         291.30
_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                   6.4323(2)
_cell_length_b                   9.5882(2)
_cell_length_c                   23.5349(6)
_cell_measurement_reflns_used    9042
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      68.20
_cell_measurement_theta_min      3.76
_cell_volume                     1451.50(7)
_computing_cell_refinement       'SAINT 7.3 (Bruker-AXS, 2006)'
_computing_data_collection       'APEX2 2.1 (Bruker-AXS, 2007)'
_computing_data_reduction        'SAINT 7.3 (Bruker-AXS, 2006)'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 8.3
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker Smart APEX CCD'
_diffrn_measurement_method       'omega and phi 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  0.0193
_diffrn_reflns_av_sigmaI/netI    0.0096
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            19525
_diffrn_reflns_theta_full        67.56
_diffrn_reflns_theta_max         67.56
_diffrn_reflns_theta_min         3.76
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.841
_exptl_absorpt_correction_T_max  0.8842
_exptl_absorpt_correction_T_min  0.7033
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 2007)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.333
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             616
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.169
_refine_diff_density_min         -0.161
_refine_diff_density_rms         0.035
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.05(12)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.049
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     196
_refine_ls_number_reflns         2610
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.049
_refine_ls_R_factor_all          0.0242
_refine_ls_R_factor_gt           0.0241
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0387P)^2^+0.2830P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0628
_refine_ls_wR_factor_ref         0.0629
_reflns_number_gt                2591
_reflns_number_total             2610
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja8062315_si_006.cif
_cod_data_source_block           d08002
_cod_database_code               4103750