Enantioselective Organocatalytic Michael Addition of Nitroalkanes and Other Nucleophiles to β-Trifluoromethylated Acrylamides
Wen, Lele; Yin, Liang; Shen, Qilong; Lu, Long; ACS Catalysis 3 (2013) 502–; doi:10.1021/cs300806w

data_4507770
_publ_section_title
;
 Enantioselective Organocatalytic Michael Addition of Nitroalkanes and
 Other Nucleophiles to \b-Trifluoromethylated Acrylamides
;
_journal_issue                   4
_journal_name_full               'ACS Catalysis'
_journal_page_first              502
_journal_paper_doi               10.1021/cs300806w
_journal_volume                  3
_journal_year                    2013
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C7 H10 F3 N O3'
_chemical_formula_sum            'C7 H10 F3 N O3'
_chemical_formula_weight         213.16
_space_group_IT_number           96
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  'P 4nw 2abw'
_symmetry_space_group_name_H-M   'P 43 21 2'
_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            8
_cell_length_a                   7.0694(10)
_cell_length_b                   7.0694(10)
_cell_length_c                   35.240(7)
_cell_measurement_reflns_used    1560
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      67.28
_cell_measurement_theta_min      5.02
_cell_volume                     1761.2(5)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0505
_diffrn_reflns_av_sigmaI/netI    0.0382
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       40
_diffrn_reflns_limit_l_min       -41
_diffrn_reflns_number            7288
_diffrn_reflns_theta_full        67.28
_diffrn_reflns_theta_max         67.28
_diffrn_reflns_theta_min         5.02
_exptl_absorpt_coefficient_mu    1.460
_exptl_absorpt_correction_T_max  0.6522
_exptl_absorpt_correction_T_min  0.5288
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.608
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       pyramide
_exptl_crystal_F_000             880
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.32
_refine_diff_density_max         0.201
_refine_diff_density_min         -0.300
_refine_diff_density_rms         0.076
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.0(2)
_refine_ls_extinction_coef       0.141(6)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.099
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     128
_refine_ls_number_reflns         1563
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.099
_refine_ls_R_factor_all          0.0437
_refine_ls_R_factor_gt           0.0437
_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^)+(0.0620P)^2^+0.5456P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1122
_refine_ls_wR_factor_ref         0.1122
_reflns_number_gt                1560
_reflns_number_total             1563
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cs300806w_si_005.cif
_cod_data_source_block           035
_cod_database_code               4507770