Cu(I)/Bis(azaferrocene)-Catalyzed Enantioselective Synthesis of β-Lactams via Couplings of Alkynes with Nitrones
Michael M.-C. Lo; Gregory C. Fu; Journal of the American Chemical Society 124 (2002) 4572–4573; doi:10.1021/ja025833z

data_4114767
_publ_section_title
;
 Cu(I)/Bis(azaferrocene)-Catalyzed Enantioselective Synthesis of
 \b-Lactams via Couplings of Alkynes with Nitrones
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              4572
_journal_page_last               4573
_journal_paper_doi               10.1021/ja025833z
_journal_volume                  124
_journal_year                    2002
_chemical_formula_moiety         'C21 H16 Br N O'
_chemical_formula_sum            'C21 H16 Br N O'
_chemical_formula_weight         378.26
_space_group_IT_number           92
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  'P 4abw 2nw'
_symmetry_space_group_name_H-M   'P 41 21 2'
_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            8
_cell_length_a                   8.8016(5)
_cell_length_b                   8.8016(5)
_cell_length_c                   46.695(4)
_cell_measurement_temperature    183(2)
_cell_volume                     3617.4(4)
_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      183(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_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  0.0448
_diffrn_reflns_av_sigmaI/netI    0.0274
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       51
_diffrn_reflns_limit_l_min       -41
_diffrn_reflns_number            14511
_diffrn_reflns_theta_full        23.27
_diffrn_reflns_theta_max         23.27
_diffrn_reflns_theta_min         2.35
_exptl_absorpt_coefficient_mu    2.279
_exptl_absorpt_correction_T_max  0.8443
_exptl_absorpt_correction_T_min  0.5414
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Bruker SADABS'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.389
_exptl_crystal_description       block
_exptl_crystal_F_000             1536
_exptl_crystal_size_max          0.21
_exptl_crystal_size_mid          0.17
_exptl_crystal_size_min          0.1
_refine_diff_density_max         0.194
_refine_diff_density_min         -0.206
_refine_diff_density_rms         0.040
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.008(13)
_refine_ls_extinction_coef       0.0012(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   1.040
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     218
_refine_ls_number_reflns         2597
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.040
_refine_ls_R_factor_all          0.0417
_refine_ls_R_factor_gt           0.0342
_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^)+(0.0281P)^2^+2.5537P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0718
_refine_ls_wR_factor_ref         0.0744
_reflns_number_gt                2285
_reflns_number_total             2597
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja025833z_2.cif
_cod_data_source_block           01157s
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_absorpt_correction_type' value 'multi-scans' was replaced
with the value 'multi-scan' as specified in the replacement file
'src/cod-tools/trunk/data/replacement-values/replacement_values.lst'.

Automatic conversion script
Id: cif_fix_values 5376 2017-05-30 11:51:03Z andrius 
;
_cod_database_code               4114767