Cu- and Pd-catalyzed asymmetric one-pot tandem addition-cyclization reaction of 2-(2',3'-alkadienyl)-beta-keto esters, organic halides, and dibenzyl azodicarboxylate: an effective protocol for the enantioselective synthesis of pyrazolidine derivatives.
Ma, Shengming; Jiao, Ning; Zheng, Zilong; Ma, Zhichao; Lu, Zhan; Ye, Longwu; Deng, Youqian; Chen, Guofei; Organic letters 6 (2004) 2193–2196; doi:10.1021/ol0493498

data_1507086
_publ_section_title
;
 Cu- and Pd-catalyzed asymmetric one-pot tandem addition-cyclization
 reaction of 2-(2',3'-alkadienyl)-beta-keto esters, organic halides, and
 dibenzyl azodicarboxylate: an effective protocol for the enantioselective
 synthesis of pyrazolidine derivatives.
;
_journal_issue                   13
_journal_name_full               'Organic letters'
_journal_page_first              2193
_journal_page_last               2196
_journal_paper_doi               10.1021/ol0493498
_journal_volume                  6
_journal_year                    2004
_chemical_formula_sum            'C32 H31 Br N2 O7'
_chemical_formula_weight         635.50
_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                   8.9635(9)
_cell_length_b                   10.2834(11)
_cell_length_c                   32.786(4)
_cell_measurement_reflns_used    3393
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      47.603
_cell_measurement_theta_min      4.676
_cell_volume                     3022.1(6)
_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 0.961
_diffrn_measured_fraction_theta_max 0.961
_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  0.0975
_diffrn_reflns_av_sigmaI/netI    0.1194
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       43
_diffrn_reflns_limit_l_min       -35
_diffrn_reflns_number            18496
_diffrn_reflns_theta_full        28.36
_diffrn_reflns_theta_max         28.36
_diffrn_reflns_theta_min         2.08
_exptl_absorpt_coefficient_mu    1.410
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.58194
_exptl_absorpt_correction_type   empirical
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.397
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             1312
_exptl_crystal_size_max          0.515
_exptl_crystal_size_mid          0.510
_exptl_crystal_size_min          0.375
_refine_diff_density_max         0.300
_refine_diff_density_min         -0.350
_refine_diff_density_rms         0.041
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.001(7)
_refine_ls_extinction_coef       0.0055(3)
_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   0.797
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     425
_refine_ls_number_reflns         7023
_refine_ls_number_restraints     8
_refine_ls_restrained_S_all      0.797
_refine_ls_R_factor_all          0.1077
_refine_ls_R_factor_gt           0.0469
_refine_ls_shift/su_max          0.007
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0271P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0813
_refine_ls_wR_factor_ref         0.0928
_reflns_number_gt                3265
_reflns_number_total             7023
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol0493498si20040409_083600.cif
_cod_data_source_block           cd23415
_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 2.4.1 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)2(1)2(1)
_cod_database_code               1507086