Access to β<sup>2</sup>-Amino Acids via Enantioselective 1,4-Arylation of β-Nitroacrylates Catalyzed by Chiral Rhodium Catalysts.
Jian, Jia-Hong; Hsu, Chih-Lung; Syu, Jin-Fong; Kuo, Ting-Shen; Tsai, Ming-Kang; Wu, Ping-Yu; Wu, Hsyueh-Liang; The Journal of organic chemistry 83 (2018) 12184–12191; doi:10.1021/acs.joc.8b00586

data_4035251
_publ_section_title
;
 Access to \b<sup>2</sup>-Amino Acids via Enantioselective 1,4-Arylation
 of \b-Nitroacrylates Catalyzed by Chiral Rhodium Catalysts.
;
_journal_issue                   19
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              12184
_journal_page_last               12191
_journal_paper_doi               10.1021/acs.joc.8b00586
_journal_volume                  83
_journal_year                    2018
_chemical_absolute_configuration unk
_chemical_formula_moiety         'C19 H21 N O4'
_chemical_formula_sum            'C19 H21 N O4'
_chemical_formula_weight         327.37
_space_group_IT_number           5
_space_group_name_Hall           'C 2y'
_space_group_name_H-M_alt        'C 1 2 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_H-M   'C 1 2 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                 115.841(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   17.6648(6)
_cell_length_b                   5.6836(2)
_cell_length_c                   18.7544(9)
_cell_measurement_reflns_used    2712
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      24.65
_cell_measurement_theta_min      2.30
_cell_volume                     1694.66(12)
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1986)'
_diffrn_ambient_temperature      200(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'Bruker APEX2'
_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  0.0297
_diffrn_reflns_av_sigmaI/netI    0.0384
_diffrn_reflns_limit_h_max       20
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            7550
_diffrn_reflns_theta_full        25.06
_diffrn_reflns_theta_max         25.06
_diffrn_reflns_theta_min         2.31
_exptl_absorpt_coefficient_mu    0.090
_exptl_absorpt_correction_T_max  0.9919
_exptl_absorpt_correction_T_min  0.9770
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.283
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             696
_exptl_crystal_size_max          0.26
_exptl_crystal_size_mid          0.11
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.111
_refine_diff_density_min         -0.140
_refine_diff_density_rms         0.030
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.0(11)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.042
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     218
_refine_ls_number_reflns         2888
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.042
_refine_ls_R_factor_all          0.0460
_refine_ls_R_factor_gt           0.0341
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0349P)^2^+0.2052P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0709
_refine_ls_wR_factor_ref         0.0761
_reflns_number_gt                2444
_reflns_number_total             2888
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo8b00586_si_003.cif
_cod_data_source_block           a17253
_cod_original_cell_volume        1694.65(12)
_cod_original_sg_symbol_H-M      'C 2'
_cod_database_code               4035251