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_4030059
_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            'C27 H28 O2'
_chemical_formula_weight         384.49
_space_group_crystal_system      monoclinic
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yn'
_space_group_name_H-M_alt        'P 1 21/n 1'
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 1'
_atom_sites_solution_hydrogens   geom
_cell_angle_alpha                90
_cell_angle_beta                 104.0683(13)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.0397(2)
_cell_length_b                   17.8239(6)
_cell_length_c                   15.1921(5)
_cell_measurement_reflns_used    6069
_cell_measurement_temperature    103.(2)
_cell_measurement_theta_max      29.1427
_cell_measurement_theta_min      2.6413
_cell_volume                     2111.71(11)
_computing_cell_refinement       'SAINT V8.34A (Bruker AXS Inc., 2013)'
_computing_data_collection       'APEX2 (Bruker AXS Inc., 2013)'
_computing_data_reduction        'SAINT V8.34A (Bruker AXS Inc., 2013)'
_computing_molecular_graphics    'XP (Bruker AXS Inc., 2013)'
_computing_publication_material  'APEX2 (Bruker AXS Inc., 2013)'
_computing_structure_refinement  'SHELXL-2013 (Sheldrick, 2013)'
_diffrn_ambient_temperature      103.(2)
_diffrn_detector_area_resol_mean 8.3333
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0314
_diffrn_reflns_av_unetI/netI     0.0348
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -23
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            20581
_diffrn_reflns_theta_full        29.15
_diffrn_reflns_theta_max         29.15
_diffrn_reflns_theta_min         1.79
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.074
_exptl_absorpt_correction_T_max  0.98
_exptl_absorpt_correction_T_min  0.89
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS V2012/1 (Bruker AXS Inc.)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.209
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             824
_exptl_crystal_size_max          0.380
_exptl_crystal_size_mid          0.300
_exptl_crystal_size_min          0.260
_refine_diff_density_max         0.444
_refine_diff_density_min         -0.301
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.092
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     267
_refine_ls_number_reflns         5662
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.092
_refine_ls_R_factor_all          0.0630
_refine_ls_R_factor_gt           0.0477
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0786P)^2^+0.3944P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1250
_refine_ls_wR_factor_ref         0.1438
_reflns_number_gt                4497
_reflns_number_total             5662
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo5020195_si_010.cif
_cod_data_source_block           I
_cod_depositor_comments
'Adding full bibliography for 4030057--4030064.cif.'
_cod_database_code               4030059
_shelx_res_checksum              30620
_shelx_hkl_checksum              9833