Highly diastereo- and enantioselective tandem reaction toward functionalized pyrrolidines with multiple stereocenters.
Guo, Shengmei; Xie, Yinjun; Hu, Xinquan; Huang, Hanmin; Organic letters 13 (2011) 5596–5599; doi:10.1021/ol2023196

data_1502522
_publ_section_title
;
 Highly diastereo- and enantioselective tandem reaction toward
 functionalized pyrrolidines with multiple stereocenters.
;
_journal_issue                   20
_journal_name_full               'Organic letters'
_journal_page_first              5596
_journal_page_last               5599
_journal_paper_doi               10.1021/ol2023196
_journal_volume                  13
_journal_year                    2011
_chemical_absolute_configuration none
_chemical_formula_sum            'C26 H26 Br N O4'
_chemical_formula_weight         496.39
_chemical_name_systematic
; 
 ? 
;
_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                 100.860(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   10.730(6)
_cell_length_b                   9.321(6)
_cell_length_c                   12.255(7)
_cell_measurement_reflns_used    1934
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      19.00
_cell_measurement_theta_min      2.32
_cell_volume                     1203.7(12)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w 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  0.0536
_diffrn_reflns_av_sigmaI/netI    0.1052
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            8559
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         25.50
_diffrn_reflns_theta_min         2.32
_exptl_absorpt_coefficient_mu    1.739
_exptl_absorpt_correction_T_max  0.7116
_exptl_absorpt_correction_T_min  0.6417
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.370
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             512
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.26
_exptl_crystal_size_min          0.21
_refine_diff_density_max         0.402
_refine_diff_density_min         -0.425
_refine_diff_density_rms         0.057
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.008(12)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.029
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     291
_refine_ls_number_reflns         4420
_refine_ls_number_restraints     31
_refine_ls_restrained_S_all      1.037
_refine_ls_R_factor_all          0.1022
_refine_ls_R_factor_gt           0.0506
_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^)+(0.0269P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1067
_refine_ls_wR_factor_ref         0.1273
_reflns_number_gt                2668
_reflns_number_total             4420
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol2023196_si_002.cif
_cod_data_source_block           p21
_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.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      P2(1)
_cod_database_code               1502522