Site-Selective Electrophilic Cyclization and Subsequent Ring-Opening: A Synthetic Route to Pyrrolo[1,2-a]quinolines and Indolizines
Trapti Aggarwal; Sonu Kumar; Devendra K. Dhaked; Rakesh K. Tiwari; Prasad V. Bharatam; Akhilesh K. Verma; Journal of Organic Chemistry 77 (2012) 8562–8573; doi:10.1021/jo3015374

data_4027562
_publ_section_title
;
 Site-Selective Electrophilic Cyclization and Subsequent Ring-Opening: A
 Synthetic Route to Pyrrolo[1,2-a]quinolines and Indolizines
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              8562
_journal_page_last               8573
_journal_paper_doi               10.1021/jo3015374
_journal_volume                  77
_journal_year                    2012
_chemical_formula_moiety         'C27 H19 N O2'
_chemical_formula_sum            'C27 H19 N O2'
_chemical_formula_weight         389.43
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_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                 95.048(8)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.7890(10)
_cell_length_b                   5.3518(5)
_cell_length_c                   30.328(3)
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      25.00
_cell_measurement_theta_min      3.10
_cell_volume                     1906.0(3)
_computing_cell_refinement       'CrysAlisPro, Agilent Technologies'
_computing_data_collection       'CrysAlisPro, Agilent Technologies'
_computing_data_reduction        'CrysAlisPro, Agilent Technologies'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Xcalibur, Sapphire3'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enhance (Mo) x-ray Source'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0359
_diffrn_reflns_av_sigmaI/netI    0.0442
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       6
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       34
_diffrn_reflns_limit_l_min       -36
_diffrn_reflns_number            11990
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         3.08
_exptl_absorpt_coefficient_mu    0.085
_exptl_absorpt_correction_T_max  0.9831
_exptl_absorpt_correction_T_min  0.9790
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_density_diffrn    1.357
_exptl_crystal_F_000             816
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.385
_refine_diff_density_min         -0.431
_refine_diff_density_rms         0.051
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.059
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     275
_refine_ls_number_reflns         3355
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.059
_refine_ls_R_factor_all          0.0710
_refine_ls_R_factor_gt           0.0532
_refine_ls_shift/su_max          0.018
_refine_ls_shift/su_mean         0.004
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0617P)^2^+0.8054P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1211
_refine_ls_wR_factor_ref         0.1282
_reflns_number_gt                2697
_reflns_number_total             3355
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo3015374_si_001.cif
_cod_data_source_block           shelxl
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4027562