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_4103749
_publ_section_title
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 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            'C20 H19 Cl N2 O5'
_chemical_formula_weight         402.82
_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                   8.8375(16)
_cell_length_b                   11.630(2)
_cell_length_c                   18.584(3)
_cell_measurement_reflns_used    1305
_cell_measurement_temperature    193(2)
_cell_measurement_theta_max      18.13
_cell_measurement_theta_min      2.55
_cell_volume                     1910.1(6)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_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      193(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0728
_diffrn_reflns_av_sigmaI/netI    0.0889
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            14569
_diffrn_reflns_theta_full        28.31
_diffrn_reflns_theta_max         28.31
_diffrn_reflns_theta_min         2.07
_exptl_absorpt_coefficient_mu    0.235
_exptl_absorpt_correction_T_max  0.988
_exptl_absorpt_correction_T_min  0.977
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   SADBS
_exptl_crystal_colour            'light yellow'
_exptl_crystal_density_diffrn    1.401
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       chunk
_exptl_crystal_F_000             840
_exptl_crystal_size_max          0.1
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.247
_refine_diff_density_min         -0.171
_refine_diff_density_rms         0.045
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.05(9)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.995
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     329
_refine_ls_number_reflns         4754
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.995
_refine_ls_R_factor_all          0.1139
_refine_ls_R_factor_gt           0.0615
_refine_ls_shift/su_max          0.099
_refine_ls_shift/su_mean         0.008
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0456P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1043
_refine_ls_wR_factor_ref         0.1226
_reflns_number_gt                2861
_reflns_number_total             4754
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja8062315_si_005.cif
_cod_data_source_block           emv01
_cod_depositor_comments
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The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'none' was changed to '?' - the
value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_cell_volume        1910.2(6)
_cod_database_code               4103749