Enantioselective Synthesis of β-Fluoro Amines via β-Amino α-Fluoro Nitroalkanes and a Traceless Activating Group Strategy
Vara, Brandon A.; Johnston, Jeffrey N.; Journal of the American Chemical Society  (2016) –; doi:10.1021/jacs.6b07731

data_4125282
_publ_section_title
;
 Enantioselective Synthesis of \b-Fluoro Amines via \b-Amino \a-Fluoro
 Nitroalkanes and a Traceless Activating Group Strategy
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_paper_doi               10.1021/jacs.6b07731
_journal_year                    2016
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C19 H19 Cl2 F N2 O4'
_chemical_formula_sum            'C19 H19 Cl2 F N2 O4'
_chemical_formula_weight         429.26
_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                 109.6016(11)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.5907(2)
_cell_length_b                   17.2393(4)
_cell_length_c                   13.3259(3)
_cell_measurement_reflns_used    9778
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      27.52
_cell_measurement_theta_min      2.55
_cell_volume                     2075.58(8)
_computing_cell_refinement       'APEX II v2010.11.3 (Bruker, 2013)'
_computing_data_collection       'APEX II v2010.11.3 (Bruker, 2013)'
_computing_data_reduction        'APEX II v2010.11.3 (Bruker, 2013)'
_computing_molecular_graphics    'SHELXTL (Bruker, 2013)'
_computing_publication_material  'SHELXTL (Bruker, 2013)'
_computing_structure_refinement  'SHELXTL (Bruker, 2012)'
_computing_structure_solution    'SHELXTL (Bruker, 2013)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector                 'CCD area detector'
_diffrn_detector_area_resol_mean 83.33
_diffrn_detector_type            'Bruker APEXII'
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_details
'0.50 degree frames measured for 20 seconds each'
_diffrn_measurement_device       'APEX Kappa Duo'
_diffrn_measurement_device_type  Kappa
_diffrn_measurement_method       'omega and phi 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  0.0330
_diffrn_reflns_av_sigmaI/netI    0.0272
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       22
_diffrn_reflns_limit_k_min       -22
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            30851
_diffrn_reflns_theta_full        27.52
_diffrn_reflns_theta_max         27.52
_diffrn_reflns_theta_min         1.62
_exptl_absorpt_coefficient_mu    0.348
_exptl_absorpt_correction_T_max  0.9211
_exptl_absorpt_correction_T_min  0.8997
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, G. Sheldrick; 2014'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.374
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             888
_exptl_crystal_size_max          0.31
_exptl_crystal_size_mid          0.29
_exptl_crystal_size_min          0.24
_refine_diff_density_max         0.423
_refine_diff_density_min         -0.433
_refine_diff_density_rms         0.039
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.01(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.024
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     511
_refine_ls_number_reflns         9578
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.024
_refine_ls_R_factor_all          0.0358
_refine_ls_R_factor_gt           0.0333
_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^)+(0.0461P)^2^+0.4770P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0864
_refine_ls_wR_factor_ref         0.0888
_reflns_number_gt                9047
_reflns_number_total             9578
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja6b07731_si_003.cif
_cod_data_source_block           15060
_cod_original_sg_symbol_H-M      P2(1)
_cod_database_code               4125282