Gold-catalyzed cycloisomerization of 1,6-diyne esters to 1H-cyclopenta[b]naphthalenes, cis-cyclopenten-2-yl δ-diketones, and bicyclo[3.2.0]hepta-1,5-dienes.
Li, Dan; Rao, Weidong; Tay, Guan Liang; Ayers, Benjamin James; Chan, Philip Wai Hong; The Journal of organic chemistry 79 (2014) 11301–11315; doi:10.1021/jo5020195

data_4030062
_publ_section_title
;
 Gold-catalyzed cycloisomerization of 1,6-diyne esters to
 1H-cyclopenta[b]naphthalenes, cis-cyclopenten-2-yl \d-diketones, and
 bicyclo[3.2.0]hepta-1,5-dienes.
;
_journal_issue                   23
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              11301
_journal_page_last               11315
_journal_paper_doi               10.1021/jo5020195
_journal_volume                  79
_journal_year                    2014
_chemical_formula_sum            'C24 H22 O2'
_chemical_formula_weight         342.42
_space_group_crystal_system      orthorhombic
_space_group_IT_number           61
_space_group_name_Hall           '-P 2ac 2ab'
_space_group_name_H-M_alt        'P b c a'
_symmetry_space_group_name_Hall  '-P 2ac 2ab'
_symmetry_space_group_name_H-M   'P b c a'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   7.5760(5)
_cell_length_b                   18.9865(12)
_cell_length_c                   25.0328(16)
_cell_measurement_reflns_used    4463
_cell_measurement_temperature    103.(2)
_cell_measurement_theta_max      32.3062
_cell_measurement_theta_min      2.6929
_cell_volume                     3600.8(4)
_computing_cell_refinement       'SAINT V8.27B (Bruker AXS Inc., 2012)'
_computing_data_collection       'Bruker Apex2'
_computing_data_reduction        'SAINT V8.27B (Bruker AXS Inc., 2012)'
_computing_molecular_graphics    'Bruker Apex2'
_computing_publication_material  'Bruker Apex2'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      103.(2)
_diffrn_detector_area_resol_mean 8.3333
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0429
_diffrn_reflns_av_sigmaI/netI    0.0478
_diffrn_reflns_limit_h_max       5
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       23
_diffrn_reflns_limit_k_min       -28
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -37
_diffrn_reflns_number            22709
_diffrn_reflns_theta_full        32.59
_diffrn_reflns_theta_max         32.59
_diffrn_reflns_theta_min         2.29
_exptl_absorpt_coefficient_mu    0.079
_exptl_absorpt_correction_T_max  0.97
_exptl_absorpt_correction_T_min  0.83
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS V2012/1 (Bruker AXS Inc.)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.263
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1456
_exptl_crystal_size_max          0.420
_exptl_crystal_size_mid          0.400
_exptl_crystal_size_min          0.390
_refine_diff_density_max         0.655
_refine_diff_density_min         -0.287
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.036
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     237
_refine_ls_number_reflns         6556
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.036
_refine_ls_R_factor_all          0.0805
_refine_ls_R_factor_gt           0.0571
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0837P)^2^+0.7047P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1412
_refine_ls_wR_factor_ref         0.1551
_reflns_number_gt                4861
_reflns_number_total             6556
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo5020195_si_005.cif
_cod_data_source_block           I
_cod_depositor_comments
'Adding full bibliography for 4030057--4030064.cif.'
_cod_database_code               4030062