Counteranion-Controlled Unprecedented Diastereo- and Enantioselective Tandem Formal Povarov Reaction for Construction of Bioactive Octahydro-Dipyrroloquinolines
Yu, Xiao-Long; Kuang, Liping; Chen, Su; Zhu, Xiao-Long; Li, Zhong-Liang; Tan, Bin; Liu, Xin-Yuan; ACS Catalysis  (2016) 6182–; doi:10.1021/acscatal.6b01492

data_4513936
_publ_section_title
;
 Counteranion-Controlled Unprecedented Diastereo- and Enantioselective
 Tandem Formal Povarov Reaction for Construction of Bioactive
 Octahydro-Dipyrroloquinolines
;
_journal_name_full               'ACS Catalysis'
_journal_page_first              6182
_journal_paper_doi               10.1021/acscatal.6b01492
_journal_year                    2016
_chemical_absolute_configuration unk
_chemical_formula_sum            'C20 H20 I2 N2'
_chemical_formula_weight         542.18
_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                   8.0059(11)
_cell_length_b                   12.7607(17)
_cell_length_c                   18.742(3)
_cell_measurement_temperature    293(2)
_cell_volume                     1914.7(5)
_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      293(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  0.0261
_diffrn_reflns_av_sigmaI/netI    0.0234
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            16404
_diffrn_reflns_theta_full        27.52
_diffrn_reflns_theta_max         27.52
_diffrn_reflns_theta_min         1.93
_exptl_absorpt_coefficient_mu    3.289
_exptl_absorpt_correction_T_max  1.000000
_exptl_absorpt_correction_T_min  0.588329
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.881
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             1040
_exptl_crystal_size_max          0.31
_exptl_crystal_size_mid          0.13
_exptl_crystal_size_min          0.11
_refine_diff_density_max         0.807
_refine_diff_density_min         -0.516
_refine_diff_density_rms         0.061
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.00
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.023
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     217
_refine_ls_number_reflns         4373
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.023
_refine_ls_R_factor_all          0.0347
_refine_ls_R_factor_gt           0.0293
_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^)+(0.0352P)^2^+1.1291P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0723
_refine_ls_wR_factor_ref         0.0755
_reflns_number_gt                3896
_reflns_number_total             4373
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            cs6b01492_si_002.cif
_cod_data_source_block           151023a_0m
_cod_original_cell_volume        1914.7(4)
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               4513936