Domino Imino-Aldol-Aza-Michael Reaction: One-Pot Diastereo- and Enantioselective Synthesis of Piperidines
Manas K. Ghorai; Sandipan Halder; Raj Kumar Das; Journal of Organic Chemistry 75 (2010) 7061–7072; doi:10.1021/jo101680f

data_4025776
_publ_section_title
;
 Domino Imino-Aldol-Aza-Michael Reaction: One-Pot Diastereo- and
 Enantioselective Synthesis of Piperidines
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              7061
_journal_page_last               7072
_journal_paper_doi               10.1021/jo101680f
_journal_volume                  75
_journal_year                    2010
_chemical_formula_sum            'C27 H27 N O5 S'
_chemical_formula_weight         477.56
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.000
_cell_angle_beta                 99.568(5)
_cell_angle_gamma                90.000
_cell_formula_units_Z            2
_cell_length_a                   11.304(5)
_cell_length_b                   7.763(4)
_cell_length_c                   13.644(6)
_cell_measurement_reflns_used    999
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      28.33
_cell_measurement_theta_min      2.17
_cell_volume                     1180.6(10)
_computing_cell_refinement       'SAINT 6.45 ( Bruker, 2003)'
_computing_data_collection       'SMART 5.628 (Bruker, 2003)'
_computing_data_reduction        'SAINT 6.45 ( Bruker, 2003)'
_computing_molecular_graphics    'Diamond 2.1e'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR 97'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.986
_diffrn_measured_fraction_theta_max 0.986
_diffrn_measurement_device_type  'Bruker SMART APEX'
_diffrn_measurement_method       /w-scans
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.0400
_diffrn_reflns_av_sigmaI/netI    0.0535
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -5
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            7628
_diffrn_reflns_theta_full        28.33
_diffrn_reflns_theta_max         28.33
_diffrn_reflns_theta_min         2.17
_exptl_absorpt_coefficient_mu    0.176
_exptl_absorpt_correction_T_max  0.9774
_exptl_absorpt_correction_T_min  0.9673
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'SADABAS 2.10 (Bruker 2003)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.343
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             504
_exptl_crystal_size_max          0.19
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.13
_refine_diff_density_max         0.445
_refine_diff_density_min         -0.504
_refine_diff_density_rms         0.084
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.09(12)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.972
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     311
_refine_ls_number_reflns         4743
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.972
_refine_ls_R_factor_all          0.0639
_refine_ls_R_factor_gt           0.0489
_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^)+(0.0919P)^2^+2.1222P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1223
_refine_ls_wR_factor_ref         0.1710
_reflns_number_gt                4263
_reflns_number_total             4743
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo101680f_si_002_1.cif
_cod_data_source_block           Compound6a
_cod_original_cell_volume        1180.7(10)
_cod_database_code               4025776