AgSbF<sub>6</sub>-catalyzed C3 <i>aza</i>-Friedel-Crafts alkylation of <i>N</i>,<i>O</i>-acetals with indoles for the synthesis of <i>N-α</i> indole substituted pyrrolidine and piperidine derivatives.
Zhang, Yu; Yi, Zi-Juan; Yang, Ai-Mei; Guo, Jia-Ming; Li, Xin; Wei, Bang-Guo; Organic & biomolecular chemistry 21 (2023) 1303–1315; doi:10.1039/d2ob02213c

data_7159083
_publ_section_title
;
 AgSbF<sub>6</sub>-catalyzed C3 <i>aza</i>-Friedel-Crafts alkylation of
 <i>N</i>,<i>O</i>-acetals with indoles for the synthesis of
 <i>N-&#x3b1;</i> indole substituted pyrrolidine and piperidine
 derivatives.
;
_journal_issue                   6
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              1303
_journal_page_last               1315
_journal_paper_doi               10.1039/d2ob02213c
_journal_volume                  21
_journal_year                    2023
_chemical_absolute_configuration ad
_chemical_formula_sum            'C23 H36 N2 O3 Si'
_chemical_formula_weight         416.63
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2013
_audit_update_record
;
2022-05-08 deposited with the CCDC.	2023-01-06 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   6.786(2)
_cell_length_b                   15.114(5)
_cell_length_c                   24.774(8)
_cell_measurement_reflns_used    4113
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      54.494
_cell_measurement_theta_min      5.319
_cell_volume                     2540.9(14)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2013)'
_computing_structure_solution    'SHELXS-97 (Sheldrick 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0344
_diffrn_reflns_av_unetI/netI     0.0476
_diffrn_reflns_Laue_measured_fraction_full 0.992
_diffrn_reflns_Laue_measured_fraction_max 0.993
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            12595
_diffrn_reflns_point_group_measured_fraction_full 0.992
_diffrn_reflns_point_group_measured_fraction_max 0.991
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         25.999
_diffrn_reflns_theta_min         2.811
_exptl_absorpt_coefficient_mu    0.115
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.6708
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.089
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             904
_exptl_crystal_size_max          0.200
_exptl_crystal_size_mid          0.130
_exptl_crystal_size_min          0.080
_refine_diff_density_max         0.286
_refine_diff_density_min         -0.180
_refine_diff_density_rms         0.028
_refine_ls_abs_structure_details
; 
 Flack x determined using 1151 quotients [(I+)-(I-)]/[(I+)+(I-)] 
 (Parsons and Flack (2004), Acta Cryst. A60, s61). 
;
_refine_ls_abs_structure_Flack   -0.01(7)
_refine_ls_extinction_coef       0.023(5)
_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   1.016
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     271
_refine_ls_number_reflns         4958
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.016
_refine_ls_R_factor_all          0.0788
_refine_ls_R_factor_gt           0.0489
_refine_ls_shift/su_max          0.006
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0619P)^2^+0.2555P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1138
_refine_ls_wR_factor_ref         0.1339
_reflns_Friedel_coverage         0.738
_reflns_Friedel_fraction_full    0.991
_reflns_Friedel_fraction_max     0.988
_reflns_number_gt                3417
_reflns_number_total             4958
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            d2ob02213c2.cif
_cod_data_source_block           mo_dd21076_0m
_cod_depositor_comments
'Adding full bibliography for 7159083--7159084.cif.'
_cod_original_cell_volume        2541.0(14)
_cod_database_code               7159083
_shelx_estimated_absorpt_t_min   0.977
_shelx_estimated_absorpt_t_max   0.991
_shelxl_version_number           2013-4
_shelx_res_checksum              93614