Palladium-Catalyzed Annulation of Allenes with Indole-2-carboxylic Acid Derivatives: Synthesis of Indolo[2,3-c]pyrane-1-ones via Ar-I Reactivity or C-H Functionalization
R. Rama Suresh; K. C. Kumara Swamy; Journal of Organic Chemistry 77 (2012) 6959–6969; doi:10.1021/jo301149s

data_4027393
_publ_section_title
;
 Palladium-Catalyzed Annulation of Allenes with Indole-2-carboxylic Acid
 Derivatives: Synthesis of Indolo[2,3-c]pyrane-1-ones via Ar-I Reactivity
 or C-H Functionalization
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              6959
_journal_page_last               6969
_journal_paper_doi               10.1021/jo301149s
_journal_volume                  77
_journal_year                    2012
_chemical_formula_moiety         'C16 H15 N O4'
_chemical_formula_sum            'C16 H15 N O4'
_chemical_formula_weight         285.29
_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                 103.842(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   13.362(3)
_cell_length_b                   13.883(3)
_cell_length_c                   7.8491(17)
_cell_measurement_temperature    273(2)
_cell_volume                     1413.8(5)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      273(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_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  0.0348
_diffrn_reflns_av_sigmaI/netI    0.0221
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            13301
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         1.57
_exptl_absorpt_coefficient_mu    0.097
_exptl_absorpt_correction_T_max  0.9904
_exptl_absorpt_correction_T_min  0.9715
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'SADABS, Sheldric (1996)'
_exptl_crystal_density_diffrn    1.340
_exptl_crystal_F_000             600
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.237
_refine_diff_density_min         -0.168
_refine_diff_density_rms         0.037
_refine_ls_extinction_coef       0.020(3)
_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   1.032
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     193
_refine_ls_number_reflns         2484
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.032
_refine_ls_R_factor_all          0.0586
_refine_ls_R_factor_gt           0.0501
_refine_ls_shift/su_max          0.011
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0638P)^2^+0.4598P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1283
_refine_ls_wR_factor_ref         0.1351
_reflns_number_gt                2096
_reflns_number_total             2484
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo301149s_si_002_4.cif
_cod_data_source_block           compd-37
_cod_original_cell_volume        1413.7(6)
_cod_database_code               4027393