Synthesis of 3,3-Spiroindolines via FeCl3-Mediated Cyclization of Aryl- or Alkene-Containing 3-Substituted N-Ac Indoles.
Nandi, Raj Kumar; Guillot, Régis; Kouklovsky, Cyrille; Vincent, Guillaume; Organic letters 18 (2016) 1716–1719; doi:10.1021/acs.orglett.6b00174

data_1555488
_publ_section_title
;
 Synthesis of 3,3-Spiroindolines via FeCl3-Mediated Cyclization of Aryl-
 or Alkene-Containing 3-Substituted N-Ac Indoles.
;
_journal_issue                   8
_journal_name_full               'Organic letters'
_journal_page_first              1716
_journal_page_last               1719
_journal_paper_doi               10.1021/acs.orglett.6b00174
_journal_volume                  18
_journal_year                    2016
_chemical_formula_moiety         'C17 H17 N O S'
_chemical_formula_sum            'C17 H17 N O S'
_chemical_formula_weight         283.37
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_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_cell_setting           monoclinic
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_cell_angle_beta                 103.352(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
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_cell_length_c                   18.4200(8)
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_cell_volume                     1398.18(11)
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2013)'
_diffrn_ambient_temperature      100(1)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.933
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
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_diffrn_radiation_source         'sealed tube'
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_diffrn_reflns_Laue_measured_fraction_full 0.997
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_diffrn_reflns_theta_full        25.000
_diffrn_reflns_theta_max         32.674
_diffrn_reflns_theta_min         2.273
_exptl_absorpt_coefficient_mu    0.226
_exptl_absorpt_correction_T_max  0.992
_exptl_absorpt_correction_T_min  0.912
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.346
_exptl_crystal_description       plate
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_refine_ls_R_factor_all          0.0849
_refine_ls_R_factor_gt           0.0627
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0787P)^2^+0.6803P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1667
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_reflns_number_gt                3451
_reflns_number_total             4786
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ol6b00174_si_004.cif
_cod_data_source_block           9v
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               1555488
_shelx_estimated_absorpt_t_min   0.933
_shelx_estimated_absorpt_t_max   0.982
_shelxl_version_number           2013-4
_shelx_res_checksum              25584
_shelx_hkl_checksum              20721