Multicomponent Cascade Reactions of Unprotected Ketoses and Amino Acids - Access to a Defined Configured Quaternary Stereogenic Center.
Richter, Celin; Nguyen Trung, Minh; Mahrwald, Rainer; The Journal of organic chemistry 80 (2015) 10849–10865; doi:10.1021/acs.joc.5b02003

data_4031718
_publ_section_title
;
 Multicomponent Cascade Reactions of Unprotected Ketoses and Amino Acids -
 Access to a Defined Configured Quaternary Stereogenic Center.
;
_journal_issue                   21
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              10849
_journal_page_last               10865
_journal_paper_doi               10.1021/acs.joc.5b02003
_journal_volume                  80
_journal_year                    2015
_chemical_absolute_configuration ad
_chemical_formula_sum            'C14 H25 N2 O3'
_chemical_formula_weight         269.36
_chemical_name_systematic
;
 ?
;
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   mixed
_audit_creation_method           SHELXL-2013
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.2507(13)
_cell_length_b                   9.5787(12)
_cell_length_c                   17.633(2)
_cell_measurement_reflns_used    5037
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      66.72
_cell_measurement_theta_min      5.02
_cell_volume                     1562.5(3)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2013)'
_computing_structure_solution    'SHELXS-97 (Sheldrick 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.972
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Bruker D8 VENTURE'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0432
_diffrn_reflns_av_unetI/netI     0.0407
_diffrn_reflns_laue_measured_fraction_full 0.972
_diffrn_reflns_laue_measured_fraction_max 0.994
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            8673
_diffrn_reflns_point_group_measured_fraction_full 0.964
_diffrn_reflns_point_group_measured_fraction_max 0.986
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         66.812
_diffrn_reflns_theta_min         5.016
_exptl_absorpt_coefficient_mu    0.648
_exptl_absorpt_correction_T_max  0.7528
_exptl_absorpt_correction_T_min  0.6489
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.145
_exptl_crystal_description       rod
_exptl_crystal_F_000             588
_exptl_crystal_size_max          0.190
_exptl_crystal_size_mid          0.120
_exptl_crystal_size_min          0.040
_refine_diff_density_max         0.652
_refine_diff_density_min         -0.369
_refine_diff_density_rms         0.064
_refine_ls_abs_structure_details
;
 Flack x determined using 956 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons and Flack (2004), Acta Cryst. A60, s61).
;
_refine_ls_abs_structure_Flack   0.21(13)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.036
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     180
_refine_ls_number_reflns         2723
_refine_ls_number_restraints     7
_refine_ls_restrained_S_all      1.040
_refine_ls_R_factor_all          0.0705
_refine_ls_R_factor_gt           0.0644
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.1270P)^2^+0.9263P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1805
_refine_ls_wR_factor_ref         0.1904
_reflns_Friedel_coverage         0.709
_reflns_friedel_fraction_full    0.953
_reflns_friedel_fraction_max     0.975
_reflns_number_gt                2485
_reflns_number_total             2723
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo5b02003_si_001.cif
_cod_data_source_block           18_14
_cod_depositor_comments
'Adding full bibliography for 4031716--4031718.cif.'
_cod_database_code               4031718
_shelx_estimated_absorpt_t_min   0.887
_shelx_estimated_absorpt_t_max   0.975
_shelxl_version_number           2013-4
_shelx_res_checksum              45475
_shelx_hkl_checksum              517