Cinchona Alkaloid Squaramide-Catalyzed Asymmetric Michael Addition of α-Aryl Isocyanoacetates to β-Trifluoromethylated Enones and Its Applications in the Synthesis of Chiral β-Trifluoromethylated Pyrrolines.
Zhao, Mei-Xin; Zhu, Hui-Kai; Dai, Tong-Lei; Shi, Min; The Journal of organic chemistry 80 (2015) 11330–11338; doi:10.1021/acs.joc.5b01829

data_4036406
_publ_section_title
;
 Cinchona Alkaloid Squaramide-Catalyzed Asymmetric Michael Addition of
 \a-Aryl Isocyanoacetates to \b-Trifluoromethylated Enones and Its
 Applications in the Synthesis of Chiral \b-Trifluoromethylated
 Pyrrolines.
;
_journal_issue                   22
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              11330
_journal_page_last               11338
_journal_paper_doi               10.1021/acs.joc.5b01829
_journal_volume                  80
_journal_year                    2015
_chemical_absolute_configuration ad
_chemical_formula_sum            'C20 H15 Br F3 N O3'
_chemical_formula_weight         454.24
_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                 92.119(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   22.1075(10)
_cell_length_b                   7.7997(3)
_cell_length_c                   22.3762(10)
_cell_measurement_temperature    173(2)
_cell_volume                     3855.7(3)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker Smart Apex II'
_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  0.0542
_diffrn_reflns_av_sigmaI/netI    0.0644
_diffrn_reflns_limit_h_max       26
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            22439
_diffrn_reflns_theta_full        25.01
_diffrn_reflns_theta_max         25.01
_diffrn_reflns_theta_min         1.82
_exptl_absorpt_coefficient_mu    2.181
_exptl_absorpt_correction_T_max  0.6949
_exptl_absorpt_correction_T_min  0.4684
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.565
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1824
_exptl_crystal_size_max          0.41
_exptl_crystal_size_mid          0.26
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.589
_refine_diff_density_min         -0.392
_refine_diff_density_rms         0.053
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.000(6)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.996
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     505
_refine_ls_number_reflns         6438
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.996
_refine_ls_R_factor_all          0.0457
_refine_ls_R_factor_gt           0.0359
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0303P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0746
_refine_ls_wR_factor_ref         0.0788
_reflns_number_gt                5568
_reflns_number_total             6438
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo5b01829_si_002.cif
_cod_data_source_block           z
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Monoclinic' was changed to
'monoclinic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/ACS/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_sg_symbol_H-M      C2
_cod_database_code               4036406