Catalytic enantioselective synthesis of cyclopropanes featuring vicinal all-carbon quaternary stereocenters with a CH2F group; study of the influence of C–F⋯H–N interactions on reactivity
Cao, Zhong-Yan; Wang, Wenmin; Liao, Kui; Wang, Xiaoming; Zhou, Jian; Ma, Jing; Organic Chemistry Frontiers 5 (2018) 2960–; doi:10.1039/C8QO00842F

data_1554425
_publ_section_title
;
 Catalytic enantioselective synthesis of cyclopropanes featuring vicinal
 all-carbon quaternary stereocenters with a CH2F group; study of the
 influence of C--F&#x22EF;H--N interactions on reactivity
;
_journal_issue                   20
_journal_name_full               'Organic Chemistry Frontiers'
_journal_page_first              2960
_journal_paper_doi               10.1039/C8QO00842F
_journal_volume                  5
_journal_year                    2018
_chemical_absolute_configuration ad
_chemical_formula_sum            'C18 H16 Br F O2'
_chemical_formula_weight         363.22
_space_group_IT_number           1
_space_group_name_Hall           'P 1'
_space_group_name_H-M_alt        'P 1'
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_H-M   'P 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_audit_update_record
;
2018-03-24 deposited with the CCDC.
2018-09-13 downloaded from the CCDC.
;
_cell_angle_alpha                87.391(3)
_cell_angle_beta                 81.591(2)
_cell_angle_gamma                78.532(3)
_cell_formula_units_Z            2
_cell_length_a                   6.6841(6)
_cell_length_b                   8.7074(8)
_cell_length_c                   14.4482(13)
_cell_measurement_temperature    296(2)
_cell_volume                     815.14(13)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_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  0.0302
_diffrn_reflns_av_sigmaI/netI    0.0609
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            9422
_diffrn_reflns_theta_full        25.01
_diffrn_reflns_theta_max         25.01
_diffrn_reflns_theta_min         1.42
_exptl_absorpt_coefficient_mu    2.535
_exptl_absorpt_correction_T_max  0.7507
_exptl_absorpt_correction_T_min  0.5070
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.480
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             368
_exptl_crystal_size_max          0.31
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.12
_refine_diff_density_max         1.594
_refine_diff_density_min         -0.535
_refine_diff_density_rms         0.151
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.041(15)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.065
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     398
_refine_ls_number_reflns         4504
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      1.065
_refine_ls_R_factor_all          0.0577
_refine_ls_R_factor_gt           0.0518
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1042P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1409
_refine_ls_wR_factor_ref         0.1463
_reflns_number_gt                4096
_reflns_number_total             4504
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c8qo00842f6.cif
_cod_data_source_block           z_CCDC1
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Triclinic' was changed to
'triclinic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/RSC/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      P1
_cod_database_code               1554425