Controllable Diastereoselective Cyclopropanation. Enantioselective Synthesis of Vinylcyclopropanes via Chiral Telluronium Ylides
Wei-Wei Liao; Kai Li; Yong Tang; Journal of the American Chemical Society 125 (2003) 13030–13031; doi:10.1021/ja036254c

data_4114295
_publ_section_title
;
 Controllable Diastereoselective Cyclopropanation. Enantioselective
 Synthesis of Vinylcyclopropanes via Chiral Telluronium Ylides
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              13030
_journal_page_last               13031
_journal_paper_doi               10.1021/ja036254c
_journal_volume                  125
_journal_year                    2003
_chemical_formula_moiety         'C16 H21 Br O2 Si '
_chemical_formula_sum            'C16 H21 Br O2 Si'
_chemical_formula_weight         353.33
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      19
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_cell_angle_alpha                90.11(4)
_cell_angle_beta                 89.99(3)
_cell_angle_gamma                89.99(2)
_cell_formula_units_Z            4
_cell_length_a                   14.983(2)
_cell_length_b                   20.812(6)
_cell_length_c                   5.729(4)
_cell_measurement_reflns_used    14
_cell_measurement_temperature    298.1
_cell_measurement_theta_max      9.6
_cell_measurement_theta_min      8.2
_cell_volume                     1786.4(14)
_computing_cell_refinement       WinAFC
_computing_data_collection       WinAFC
_computing_data_reduction        CrystalStructure
_computing_publication_material  'CrystalStructure Ver. 3.00'
_computing_structure_refinement  CRYSTALS
_computing_structure_solution    SIR92
_diffrn_measured_fraction_theta_full 0.9979
_diffrn_measured_fraction_theta_max 0.9979
_diffrn_measurement_device_type  'Rigaku AFC7R'
_diffrn_measurement_method       \w
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.7107
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       27
_diffrn_reflns_limit_k_min       -27
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -7
_diffrn_reflns_number            5015
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_standards_decay_%        -4.37
_diffrn_standards_interval_count 200
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    2.374
_exptl_absorpt_correction_T_max  0.622
_exptl_absorpt_correction_T_min  0.480
_exptl_absorpt_correction_type
;
\y scans (North,Phillips & Matthews, 1968)
;
_exptl_absorpt_process_details   '(North, Phillips & Mathews, 1968)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.314
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             728.00
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         1.10
_refine_diff_density_min         -0.90
_refine_ls_abs_structure_details
'Flack, H. D. (1983), Acta Cryst. A39, 876-881.  0 Friedel Pairs'
_refine_ls_abs_structure_Flack   0.01(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.740
_refine_ls_hydrogen_treatment    refall
_refine_ls_number_parameters     203
_refine_ls_number_reflns         2071
_refine_ls_R_factor_gt           0.0420
_refine_ls_shift/su_max          0.0020
_refine_ls_structure_factor_coef F
_refine_ls_weighting_details     'w = 1.0'
_refine_ls_weighting_scheme      unit
_refine_ls_wR_factor_ref         0.0430
_reflns_number_gt                2071
_reflns_number_total             4096
_reflns_threshold_expression     F^2^>2.0\s(F^2^)
_cod_data_source_file            ja036254csi20030523_101601.cif
_cod_data_source_block           '_Cytidine_(Rigaku_Master_f'
_cod_original_cell_volume        1786.3(1)
_cod_original_sg_symbol_H-M      'P 21 21 21 '
_cod_original_formula_sum        'C16 H21 Br O2 Si '
_cod_database_code               4114295