Gold catalyzed enantioselective intermolecular [3+2] dipolar cycloaddition of N-allenyl amides with nitrones
Guo-Hua Li; Wen Zhou; Xiao-Xiao Li; Qing-Wei Bi; Zhen Wang; Zhi-Gang Zhao; Wen-Xiang Hu; Zili Chen; Chem.Commun. 49 (2013) 4770–; doi:10.1039/c3cc41769g

data_7109308
_publ_section_title
;
 Gold catalyzed enantioselective intermolecular [3+2] dipolar
 cycloaddition of N-allenyl amides with nitrones
;
_journal_name_full               Chem.Commun.
_journal_page_first              4770
_journal_paper_doi               10.1039/c3cc41769g
_journal_volume                  49
_journal_year                    2013
_chemical_formula_sum            'C30 H27 Br N2 O3 S'
_chemical_formula_weight         575.51
_space_group_IT_number           18
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2 2ab'
_symmetry_space_group_name_H-M   'P 21 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            4
_cell_length_a                   18.063(3)
_cell_length_b                   20.802(4)
_cell_length_c                   7.1849(12)
_cell_measurement_reflns_used    10995
_cell_measurement_temperature    153(2)
_cell_measurement_theta_max      31.507
_cell_measurement_theta_min      2.260
_cell_volume                     2699.7(8)
_computing_cell_refinement       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_collection       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_reduction        'CrystalClear (Rigaku Inc., 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      153(2)
_diffrn_detector_area_resol_mean 28.5714
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  AFC10/Saturn724+
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Rotating Anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0426
_diffrn_reflns_av_sigmaI/netI    0.0755
_diffrn_reflns_limit_h_max       25
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       -30
_diffrn_reflns_limit_l_max       10
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            21468
_diffrn_reflns_theta_full        31.00
_diffrn_reflns_theta_max         31.00
_diffrn_reflns_theta_min         2.26
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.634
_exptl_absorpt_correction_T_max  0.6854
_exptl_absorpt_correction_T_min  0.4507
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.416
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Block
_exptl_crystal_F_000             1184
_exptl_crystal_size_max          0.58
_exptl_crystal_size_mid          0.47
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.466
_refine_diff_density_min         -0.453
_refine_diff_density_rms         0.059
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.022(6)
_refine_ls_extinction_coef       0.0047(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   1.000
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     336
_refine_ls_number_reflns         8561
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.000
_refine_ls_R_factor_all          0.0492
_refine_ls_R_factor_gt           0.0396
_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^)+(0.0125P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0659
_refine_ls_wR_factor_ref         0.0692
_reflns_number_gt                7262
_reflns_number_total             8561
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3cc41769g.txt
_cod_data_source_block           bo1976
_cod_original_cell_volume        2699.6(8)
_cod_original_sg_symbol_H-M      P2(1)2(1)2
_cod_database_code               7109308