One-pot asymmetric synthesis of substituted piperidines by exocyclic chirality induction.
Chen, Yunfeng; Zhong, Cheng; Petersen, Jeffrey L.; Akhmedov, Novruz G.; Shi, Xiaodong; Organic letters 11 (2009) 2333–2336; doi:10.1021/ol900708d

data_1503939
_publ_section_title
;
 One-pot asymmetric synthesis of substituted piperidines by exocyclic
 chirality induction.
;
_journal_issue                   11
_journal_name_full               'Organic letters'
_journal_page_first              2333
_journal_page_last               2336
_journal_paper_doi               10.1021/ol900708d
_journal_volume                  11
_journal_year                    2009
_chemical_formula_sum            'C20 H23 N3 O5'
_chemical_formula_weight         385.41
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.560(2)
_cell_angle_beta                 92.301(2)
_cell_angle_gamma                97.502(2)
_cell_formula_units_Z            2
_cell_length_a                   8.2660(10)
_cell_length_b                   8.6189(10)
_cell_length_c                   13.5928(17)
_cell_measurement_reflns_used    4220
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      2.48
_cell_volume                     959.2(2)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.938
_diffrn_measured_fraction_theta_max 0.938
_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  0.0357
_diffrn_reflns_av_sigmaI/netI    0.0752
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            6518
_diffrn_reflns_theta_full        27.55
_diffrn_reflns_theta_max         27.55
_diffrn_reflns_theta_min         2.49
_diffrn_standards_decay_%        none
_exptl_absorpt_coefficient_mu    0.097
_exptl_absorpt_correction_type   semi-empirical
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.334
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             408
_exptl_crystal_size_max          0.48
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.237
_refine_diff_density_min         -0.193
_refine_diff_density_rms         0.049
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.032
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     256
_refine_ls_number_reflns         4163
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.032
_refine_ls_R_factor_all          0.0704
_refine_ls_R_factor_gt           0.0589
_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^)+(0.0764P)^2^+0.1835P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1616
_refine_ls_wR_factor_ref         0.1735
_reflns_number_gt                3360
_reflns_number_total             4163
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol900708d_si_002.cif
_cod_data_source_block           6c-minor
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               1503939