Synthesis of Polysubstituted Cyclopentene and Cyclopenta[ b]carbazole Analogues from Unsymmetrical 4-Arylidene-3,6-diarylhex-2-en-5-ynal and Indole Derivatives via an Iodine Mediated Electrocyclization Reaction.
Bandi, Vijayalakshmi; Kavala, Veerababurao; Konala, Ashok; Hsu, Che-Hao; Villuri, Bharath Kumar; Reddy, Sabbasani Rajasekhara; Lin, LiChun; Kuo, Chun-Wei; Yao, Ching-Fa; The Journal of organic chemistry 84 (2019) 3036–3044; doi:10.1021/acs.joc.8b02168

data_4036027
_publ_section_title
;
 Synthesis of Polysubstituted Cyclopentene and Cyclopenta[ b]carbazole
 Analogues from Unsymmetrical 4-Arylidene-3,6-diarylhex-2-en-5-ynal and
 Indole Derivatives via an Iodine Mediated Electrocyclization Reaction.
;
_journal_issue                   6
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              3036
_journal_page_last               3044
_journal_paper_doi               10.1021/acs.joc.8b02168
_journal_volume                  84
_journal_year                    2019
_chemical_formula_moiety         'C45 H36 N2 O2'
_chemical_formula_sum            'C45 H36 N2 O2'
_chemical_formula_weight         636.76
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                83.142(7)
_cell_angle_beta                 77.790(7)
_cell_angle_gamma                67.611(8)
_cell_formula_units_Z            2
_cell_length_a                   11.134(2)
_cell_length_b                   12.176(3)
_cell_length_c                   13.759(3)
_cell_measurement_reflns_used    1171
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      21.08
_cell_measurement_theta_min      2.72
_cell_volume                     1684.1(6)
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1986)'
_diffrn_ambient_temperature      200(2)
_diffrn_measured_fraction_theta_full 0.992
_diffrn_measured_fraction_theta_max 0.992
_diffrn_measurement_device_type  'Bruker APEX2'
_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  0.0957
_diffrn_reflns_av_sigmaI/netI    0.1549
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            13220
_diffrn_reflns_theta_full        25.10
_diffrn_reflns_theta_max         25.10
_diffrn_reflns_theta_min         2.01
_exptl_absorpt_coefficient_mu    0.076
_exptl_absorpt_correction_T_max  0.9962
_exptl_absorpt_correction_T_min  0.9901
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.256
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             672
_exptl_crystal_size_max          0.13
_exptl_crystal_size_mid          0.11
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.765
_refine_diff_density_min         -0.337
_refine_diff_density_rms         0.056
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.947
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     442
_refine_ls_number_reflns         5954
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.947
_refine_ls_R_factor_all          0.1791
_refine_ls_R_factor_gt           0.0681
_refine_ls_shift/su_max          0.002
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0986P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1581
_refine_ls_wR_factor_ref         0.2229
_reflns_number_gt                2632
_reflns_number_total             5954
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo8b02168_si_003.cif
_cod_data_source_block           a16363
_cod_original_cell_volume        1684.1(7)
_cod_database_code               4036027