Asymmetric construction of fluorinated imidazolidines via Cu(I)-catalyzed exo'-selective 1,3-dipolar cycloaddition of azomethine ylides with fluorinated imines
Qing-Hua Li; Liang Wei; Xuan Chen; Chun-Jiang Wang; Chem.Commun. 49 (2013) 6277–; doi:10.1039/c3cc43025a

data_7109468
_publ_section_title
;
 Asymmetric construction of fluorinated imidazolidines via Cu(I)-catalyzed
 exo'-selective 1,3-dipolar cycloaddition of azomethine ylides with
 fluorinated imines
;
_journal_name_full               Chem.Commun.
_journal_page_first              6277
_journal_paper_doi               10.1039/c3cc43025a
_journal_volume                  49
_journal_year                    2013
_chemical_formula_sum            'C20 H20 Cl F3 N2 O3'
_chemical_formula_weight         428.83
_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                   10.1424(12)
_cell_length_b                   10.9573(13)
_cell_length_c                   19.058(2)
_cell_measurement_temperature    298(2)
_cell_volume                     2118.0(4)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.0261
_diffrn_reflns_av_sigmaI/netI    0.0250
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            14383
_diffrn_reflns_theta_full        26.00
_diffrn_reflns_theta_max         26.00
_diffrn_reflns_theta_min         2.14
_exptl_absorpt_coefficient_mu    0.229
_exptl_absorpt_correction_T_max  0.9775
_exptl_absorpt_correction_T_min  0.9731
_exptl_crystal_density_diffrn    1.345
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             888
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.191
_refine_diff_density_min         -0.304
_refine_diff_density_rms         0.033
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.02(6)
_refine_ls_extinction_coef       0.0322(17)
_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   1.028
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     266
_refine_ls_number_reflns         4170
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.028
_refine_ls_R_factor_all          0.0349
_refine_ls_R_factor_gt           0.0330
_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^)+(0.0441P)^2^+0.4721P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0865
_refine_ls_wR_factor_ref         0.0885
_reflns_number_gt                3974
_reflns_number_total             4170
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3cc43025a.txt
_cod_data_source_block           e:\120716a\work\mo_120716a_0m
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               7109468