Catalytic Enantioselective Synthesis of α,β-Diamino Acid Derivatives
Le Li; Madhu Ganesh; Daniel Seidel; Journal of the American Chemical Society 131 (2009) 11648–11649; doi:10.1021/ja9034494

data_4104894
_publ_section_title
;
 Catalytic Enantioselective Synthesis of \a,\b-Diamino Acid Derivatives
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              11648
_journal_page_last               11649
_journal_paper_doi               10.1021/ja9034494
_journal_volume                  131
_journal_year                    2009
_chemical_absolute_configuration ad
_chemical_formula_sum            'C20 H19 N3 O6 S2'
_chemical_formula_weight         461.50
_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                   7.5453(4)
_cell_length_b                   9.7332(6)
_cell_length_c                   27.3553(16)
_cell_measurement_reflns_used    5089
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      31.57
_cell_measurement_theta_min      2.57
_cell_volume                     2009.0(2)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w 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  0.0267
_diffrn_reflns_av_sigmaI/netI    0.0377
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       39
_diffrn_reflns_limit_l_min       -39
_diffrn_reflns_number            16369
_diffrn_reflns_theta_full        31.00
_diffrn_reflns_theta_max         31.00
_diffrn_reflns_theta_min         2.22
_exptl_absorpt_coefficient_mu    0.311
_exptl_absorpt_correction_T_max  0.984
_exptl_absorpt_correction_T_min  0.909
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   'Bruker SAINT (XPREP)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.526
_exptl_crystal_description       plate
_exptl_crystal_F_000             960
_exptl_crystal_size_max          0.31
_exptl_crystal_size_mid          0.29
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.526
_refine_diff_density_min         -0.288
_refine_diff_density_rms         0.073
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.04(6)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.000
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     285
_refine_ls_number_reflns         6377
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.000
_refine_ls_R_factor_all          0.0494
_refine_ls_R_factor_gt           0.0449
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0460P)^2^+1.5000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0968
_refine_ls_wR_factor_ref         0.0991
_reflns_number_gt                5976
_reflns_number_total             6377
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja9034494_si_001.cif
_cod_data_source_block           3meo
_cod_database_code               4104894