Regiochemistry in Cobalt-Mediated Intermolecular Pauson-Khand Reactions of Unsymmetrical Internal Heteroaromatic Alkynes with Norbornene
Benjamin E. Moulton; Adrian C. Whitwood; Anne K. Duhme-Klair; Jason M. Lynam; Ian J. S. Fairlamb; Journal of Organic Chemistry 76 (2011) 5320–5334; doi:10.1021/jo200664m

data_4026418
_publ_section_title
;
 Regiochemistry in Cobalt-Mediated Intermolecular Pauson-Khand Reactions
 of Unsymmetrical Internal Heteroaromatic Alkynes with Norbornene
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              5320
_journal_page_last               5334
_journal_paper_doi               10.1021/jo200664m
_journal_volume                  76
_journal_year                    2011
_chemical_formula_moiety         'C21 H21 N O'
_chemical_formula_sum            'C21 H21 N O'
_chemical_formula_weight         303.39
_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                 101.079(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.9810(9)
_cell_length_b                   11.8519(10)
_cell_length_c                   11.4924(9)
_cell_measurement_reflns_used    2189
_cell_measurement_temperature    110(2)
_cell_measurement_theta_max      24.85
_cell_measurement_theta_min      2.44
_cell_volume                     1601.5(2)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      110(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0306
_diffrn_reflns_av_sigmaI/netI    0.0369
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            8802
_diffrn_reflns_theta_full        25.01
_diffrn_reflns_theta_max         25.01
_diffrn_reflns_theta_min         2.44
_exptl_absorpt_coefficient_mu    0.077
_exptl_absorpt_correction_T_max  0.990
_exptl_absorpt_correction_T_min  0.816
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS v2.03; (Sheldrick)'
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.258
_exptl_crystal_density_meas      0
_exptl_crystal_description       block
_exptl_crystal_F_000             648
_exptl_crystal_size_max          0.27
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.226
_refine_diff_density_min         -0.188
_refine_diff_density_rms         0.035
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.044
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     292
_refine_ls_number_reflns         2827
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.044
_refine_ls_R_factor_all          0.0509
_refine_ls_R_factor_gt           0.0396
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0317P)^2^+0.5566P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0841
_refine_ls_wR_factor_ref         0.0886
_reflns_number_gt                2374
_reflns_number_total             2827
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo200664m_si_003.cif
_cod_data_source_block           ijf0725a
_cod_database_code               4026418