Tandem conjugate addition-elimination reaction promoted by chiral pyrrolidinyl sulfonamide (CPS).
Xu, Junye; Fu, Xiao; Low, Ruijuan; Goh, Yong-Peng; Jiang, Zhiyong; Tan, Choon-Hong; Chemical communications (Cambridge, England)  (2008) 5526–5528; doi:10.1039/b810905m

data_7103499
_publ_section_title
;
 Tandem conjugate addition-elimination reaction promoted by chiral
 pyrrolidinyl sulfonamide (CPS).
;
_journal_issue                   43
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              5526
_journal_page_last               5528
_journal_paper_doi               10.1039/b810905m
_journal_year                    2008
_chemical_formula_sum            'C21 H36 O3 S2'
_chemical_formula_weight         400.62
_space_group_IT_number           9
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C -2yc'
_symmetry_space_group_name_H-M   'C 1 c 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                 95.756(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   18.8390(19)
_cell_length_b                   12.6378(14)
_cell_length_c                   10.2009(10)
_cell_measurement_reflns_used    914
_cell_measurement_temperature    223(2)
_cell_measurement_theta_max      18.19
_cell_measurement_theta_min      2.17
_cell_volume                     2416.4(4)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_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      223(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.0523
_diffrn_reflns_av_sigmaI/netI    0.0828
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -24
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            8416
_diffrn_reflns_theta_full        27.49
_diffrn_reflns_theta_max         27.49
_diffrn_reflns_theta_min         1.94
_exptl_absorpt_coefficient_mu    0.236
_exptl_absorpt_correction_T_max  0.9906
_exptl_absorpt_correction_T_min  0.9199
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'Sadabs, (Sheldrick 2001)'
_exptl_crystal_colour            COLOURLESS
_exptl_crystal_density_diffrn    1.101
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       ROD
_exptl_crystal_F_000             872
_exptl_crystal_size_max          0.36
_exptl_crystal_size_mid          0.04
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.234
_refine_diff_density_min         -0.160
_refine_diff_density_rms         0.044
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.02(11)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.949
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     242
_refine_ls_number_reflns         4012
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      0.949
_refine_ls_R_factor_all          0.1009
_refine_ls_R_factor_gt           0.0595
_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^)+(0.0638P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1237
_refine_ls_wR_factor_ref         0.1394
_reflns_number_gt                2491
_reflns_number_total             4012
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b810905m.txt
_cod_data_source_block           8372
_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 2.4.1 from
2010-06-29.

'_exptl_absorpt_correction_type' value 'Empirical' changed to
'empirical' according to
'/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_sg_symbol_H-M      Cc
_cod_database_code               7103499