Asymmetric Induction in Hydrogen-Mediated Reductive Aldol Additions to α-Amino Aldehydes Catalyzed by Rhodium: Selective Formation of syn-Stereotriads Directed by Intramolecular Hydrogen-Bonding
Cheol-Kyu Jung; Michael J. Krische; Journal of the American Chemical Society 128 (2006) 17051–17056; doi:10.1021/ja066198q

data_4111277
_publ_section_title
;
 Asymmetric Induction in Hydrogen-Mediated Reductive Aldol Additions to
 \a-Amino Aldehydes Catalyzed by Rhodium: Selective Formation of
 syn-Stereotriads Directed by Intramolecular Hydrogen-Bonding
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              17051
_journal_page_last               17056
_journal_paper_doi               10.1021/ja066198q
_journal_volume                  128
_journal_year                    2006
_chemical_formula_sum            'C14 H22 N O4'
_chemical_formula_weight         268.33
_chemical_name_systematic
; 
 ? 
;
_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                90.00
_cell_angle_beta                 94.2570(19)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.4720(4)
_cell_length_b                   15.1850(6)
_cell_length_c                   10.5240(4)
_cell_measurement_temperature    153(2)
_cell_volume                     1668.88(11)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      153(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_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  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0682
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            6392
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         2.36
_exptl_absorpt_coefficient_mu    0.078
_exptl_crystal_density_diffrn    1.068
_exptl_crystal_F_000             580
_refine_diff_density_max         0.161
_refine_diff_density_min         -0.165
_refine_diff_density_rms         0.037
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -1.0(8)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.329
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     359
_refine_ls_number_reflns         6392
_refine_ls_number_restraints     229
_refine_ls_restrained_S_all      1.326
_refine_ls_R_factor_all          0.0886
_refine_ls_R_factor_gt           0.0505
_refine_ls_shift/su_max          0.384
_refine_ls_shift/su_mean         0.024
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0200P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0880
_refine_ls_wR_factor_ref         0.0988
_reflns_number_gt                4555
_reflns_number_total             6392
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja066198qrom20060825_035759.cif
_cod_data_source_block           tboc
_cod_database_code               4111277