Highly enantioselective alkynylation of trifluoropyruvate with alkynylsilanes catalyzed by the BINAP-Pd complex: access to α-trifluoromethyl-substituted tertiary alcohols.
Aikawa, Kohsuke; Hioki, Yūta; Mikami, Koichi; Organic letters 12 (2010) 5716–5719; doi:10.1021/ol102541s

data_1503331
_publ_section_title
;
 Highly enantioselective alkynylation of trifluoropyruvate with
 alkynylsilanes catalyzed by the BINAP-Pd complex: access to
 \a-trifluoromethyl-substituted tertiary alcohols.
;
_journal_issue                   24
_journal_name_full               'Organic letters'
_journal_page_first              5716
_journal_page_last               5719
_journal_paper_doi               10.1021/ol102541s
_journal_volume                  12
_journal_year                    2010
_chemical_formula_sum            'C24 H22 Cl2 F3 N O3'
_chemical_formula_weight         500.33
_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                 112.318(6)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   12.899(6)
_cell_length_b                   6.511(3)
_cell_length_c                   15.349(8)
_cell_measurement_reflns_used    1851
_cell_measurement_temperature    93
_cell_measurement_theta_max      25.66
_cell_measurement_theta_min      2.61
_cell_volume                     1192.5(10)
_computing_cell_refinement       'APEX2 (Bruker AXS, 2006)'
_computing_data_collection       'APEX2 (Bruker AXS, 2006)'
_computing_data_reduction        'SAINT (Bruker AXS, 2004)'
_computing_molecular_graphics    'XSHEL (Bruker AXS,2002)'
_computing_publication_material  'XCIF (Bruker AXS, 2001)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      93
_diffrn_detector_area_resol_mean 8.333
_diffrn_measured_fraction_theta_full 0.985
_diffrn_measured_fraction_theta_max 0.985
_diffrn_measurement_device_type  'Bruker APEXII CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  'Bruker Helios multilayer confocal mirror'
_diffrn_radiation_source         'Bruker TXS fine-focus rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0456
_diffrn_reflns_av_sigmaI/netI    0.0870
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            6622
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         1.43
_exptl_absorpt_coefficient_mu    0.322
_exptl_absorpt_correction_T_max  0.9936
_exptl_absorpt_correction_T_min  0.8958
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details
;
SADABS Sheldrick 1996
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.393
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             516
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.04
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.468
_refine_diff_density_min         -1.098
_refine_diff_density_rms         0.138
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.1(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.122
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     309
_refine_ls_number_reflns         4640
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      1.121
_refine_ls_R_factor_all          0.1251
_refine_ls_R_factor_gt           0.0962
_refine_ls_shift/su_max          0.010
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1602P)^2^+4.2746P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2845
_refine_ls_wR_factor_ref         0.3041
_reflns_number_gt                3459
_reflns_number_total             4640
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol102541s_si_002.cif
_cod_data_source_block           090126_1320_0
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_cell_volume        1192.4(10)
_cod_original_sg_symbol_H-M      'P2(1)   '
_cod_database_code               1503331