Asymmetric catalytic aza-Morita-Baylis-Hillman reaction (aza-MBH): an interesting functional group-caused reversal of asymmetric induction.
Shi, Min; Qi, Ming-Juan; Liu, Xu-Guang; Chemical communications (Cambridge, England)  (2008) 6025–6027; doi:10.1039/b814500h

data_7103566
_publ_section_title
;
 Asymmetric catalytic aza-Morita-Baylis-Hillman reaction (aza-MBH): an
 interesting functional group-caused reversal of asymmetric induction.
;
_journal_issue                   45
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              6025
_journal_page_last               6027
_journal_paper_doi               10.1039/b814500h
_journal_year                    2008
_chemical_absolute_configuration ad
_chemical_formula_sum            'C25 H22 Br N O5 S'
_chemical_formula_weight         528.41
_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                   8.9781(11)
_cell_length_b                   10.3536(12)
_cell_length_c                   25.647(3)
_cell_measurement_reflns_used    3651
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      43.350
_cell_measurement_theta_min      4.807
_cell_volume                     2384.0(5)
_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  0.0543
_diffrn_reflns_av_sigmaI/netI    0.0712
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -32
_diffrn_reflns_number            14054
_diffrn_reflns_theta_full        26.99
_diffrn_reflns_theta_max         26.99
_diffrn_reflns_theta_min         2.12
_exptl_absorpt_coefficient_mu    1.848
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.64925
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.472
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             1080
_exptl_crystal_size_max          0.506
_exptl_crystal_size_mid          0.422
_exptl_crystal_size_min          0.347
_refine_diff_density_max         0.475
_refine_diff_density_min         -0.443
_refine_diff_density_rms         0.049
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.002(7)
_refine_ls_extinction_coef       0.0101(6)
_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   0.847
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     309
_refine_ls_number_reflns         5149
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.847
_refine_ls_R_factor_all          0.0653
_refine_ls_R_factor_gt           0.0407
_refine_ls_shift/su_max          0.028
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0386P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0785
_refine_ls_wR_factor_ref         0.0830
_reflns_number_gt                3331
_reflns_number_total             5149
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            b814500h.txt
_cod_data_source_block           cd26535
_cod_depositor_comments
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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 2.4.1 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      P2(1)2(1)2(1)
_cod_database_code               7103566