Enantioselective conjugate addition of oximes to trisubstituted β-nitroacrylates: an organocatalytic approach to β(2,2)-amino acid derivatives.
Zhang, Fu-Gen; Yang, Qing-Qing; Xuan, Jun; Lu, Hai-Hua; Duan, Shu-Wen; Chen, Jia-Rong; Xiao, Wen-Jing; Organic letters 12 (2010) 5636–5639; doi:10.1021/ol102580n

data_1503332
_publ_section_title
;
 Enantioselective conjugate addition of oximes to trisubstituted
 \b-nitroacrylates: an organocatalytic approach to \b(2,2)-amino acid
 derivatives.
;
_journal_issue                   24
_journal_name_full               'Organic letters'
_journal_page_first              5636
_journal_page_last               5639
_journal_paper_doi               10.1021/ol102580n
_journal_volume                  12
_journal_year                    2010
_chemical_absolute_configuration syn
_chemical_formula_sum            'C19 H17 Cl N2 O6'
_chemical_formula_weight         404.80
_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                 105.102(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.3959(9)
_cell_length_b                   20.777(2)
_cell_length_c                   11.9679(13)
_cell_measurement_reflns_used    4741
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      28.15
_cell_measurement_theta_min      2.51
_cell_volume                     2015.6(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      298(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_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  0.1136
_diffrn_reflns_av_sigmaI/netI    0.0726
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -25
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            11126
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         25.50
_diffrn_reflns_theta_min         2.02
_exptl_absorpt_coefficient_mu    0.226
_exptl_absorpt_correction_T_max  0.9777
_exptl_absorpt_correction_T_min  0.9647
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.334
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             840
_exptl_crystal_size_max          0.16
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.374
_refine_diff_density_min         -0.234
_refine_diff_density_rms         0.072
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.09(8)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.048
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     529
_refine_ls_number_reflns         6785
_refine_ls_number_restraints     7
_refine_ls_restrained_S_all      1.056
_refine_ls_R_factor_all          0.0725
_refine_ls_R_factor_gt           0.0647
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1123P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1739
_refine_ls_wR_factor_ref         0.1816
_reflns_number_gt                5733
_reflns_number_total             6785
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol102580n_si_001.cif
_cod_data_source_block           100413bm
_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 2.4.2 from 2011-04-26.

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               1503332