Highly effective and diastereoselective synthesis of axially chiral bis-sulfoxide ligands via oxidative aryl coupling.
Chen, Qing-An; Dong, Xiang; Chen, Mu-Wang; Wang, Duo-Sheng; Zhou, Yong-Gui; Li, Yu-Xue; Organic letters 12 (2010) 1928–1931; doi:10.1021/ol100536e

data_1502944
_publ_section_title
;
 Highly effective and diastereoselective synthesis of axially chiral
 bis-sulfoxide ligands via oxidative aryl coupling.
;
_journal_issue                   9
_journal_name_full               'Organic letters'
_journal_page_first              1928
_journal_page_last               1931
_journal_paper_doi               10.1021/ol100536e
_journal_volume                  12
_journal_year                    2010
_chemical_formula_sum            'C22 H30 O4 S2'
_chemical_formula_weight         422.58
_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                   9.5730(7)
_cell_length_b                   14.1860(10)
_cell_length_c                   16.8432(12)
_cell_measurement_reflns_used    5756
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      51.003
_cell_measurement_theta_min      4.837
_cell_volume                     2287.3(3)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0366
_diffrn_reflns_av_sigmaI/netI    0.0382
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            13803
_diffrn_reflns_theta_full        27.49
_diffrn_reflns_theta_max         27.49
_diffrn_reflns_theta_min         1.88
_exptl_absorpt_coefficient_mu    0.256
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.6820
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.227
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             904
_exptl_crystal_size_max          0.458
_exptl_crystal_size_mid          0.391
_exptl_crystal_size_min          0.367
_refine_diff_density_max         0.206
_refine_diff_density_min         -0.197
_refine_diff_density_rms         0.039
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.04(6)
_refine_ls_extinction_coef       0.0112(11)
_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   0.997
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     262
_refine_ls_number_reflns         5202
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.997
_refine_ls_R_factor_all          0.0469
_refine_ls_R_factor_gt           0.0408
_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^)+(0.0551P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0940
_refine_ls_wR_factor_ref         0.0965
_reflns_number_gt                4530
_reflns_number_total             5202
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol100536e_si_002.cif
_cod_data_source_block           cd29498
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' 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        2287.4(3)
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               1502944