Gold-catalyzed cyclization of 1,6-diynyl dithioacetals via 1,7-carbene transfer and aromatic C-H functionalization.
Xu, Wei; Chen, Ming; Sun, Ning; Liu, Yuanhong; Chemical communications (Cambridge, England) 52 (2016) 11000–11003; doi:10.1039/c6cc05302e

data_7124886
_publ_section_title
;
 Gold-catalyzed cyclization of 1,6-diynyl dithioacetals via 1,7-carbene
 transfer and aromatic C-H functionalization.
;
_journal_issue                   73
_journal_name_full               'Chemical communications (Cambridge, England)'
_journal_page_first              11000
_journal_page_last               11003
_journal_paper_doi               10.1039/c6cc05302e
_journal_volume                  52
_journal_year                    2016
_chemical_formula_moiety         'C28 H24 O3 S2'
_chemical_formula_sum            'C28 H24 O3 S2'
_chemical_formula_weight         472.59
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_date             2015-12-01
_audit_creation_method
;
Olex2 1.2
(compiled 2014.07.22 svn.r2960 for OlexSys, GUI svn.r4862)
;
_audit_update_record
;
2016-06-14 deposited with the CCDC.
2016-08-10 downloaded from the CCDC.
;
_cell_angle_alpha                108.538(3)
_cell_angle_beta                 104.931(3)
_cell_angle_gamma                90.240(3)
_cell_formula_units_Z            2
_cell_length_a                   9.8628(16)
_cell_length_b                   11.7010(19)
_cell_length_c                   12.236(2)
_cell_measurement_reflns_used    2243
_cell_measurement_temperature    273(2)
_cell_measurement_theta_max      27.43
_cell_measurement_theta_min      2.41
_cell_volume                     1287.9(4)
_computing_cell_refinement       'SAINT v7.68A (Bruker, 2009)'
_computing_data_reduction        'SAINT v7.68A (Bruker, 2009)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL (Sheldrick, 2008)'
_computing_structure_solution    'ShelXS (Sheldrick, 2008)'
_diffrn_ambient_temperature      273.15
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.978
_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  0.0305
_diffrn_reflns_av_unetI/netI     0.0679
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.978
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            12851
_diffrn_reflns_point_group_measured_fraction_full 0.999
_diffrn_reflns_point_group_measured_fraction_max 0.978
_diffrn_reflns_theta_full        26.000
_diffrn_reflns_theta_max         30.538
_diffrn_reflns_theta_min         1.825
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.233
_exptl_absorpt_correction_T_max  0.7461
_exptl_absorpt_correction_T_min  0.5860
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2008/1 (Bruker,2008) was used for absorption correction.
wR2(int) was 0.0725 before and 0.0362 after correction.
The Ratio of minimum to maximum transmission is 0.7854.
The \l/2 correction factor is 0.0015.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.219
_exptl_crystal_description       block
_exptl_crystal_F_000             496
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.214
_refine_diff_density_min         -0.359
_refine_diff_density_rms         0.042
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.888
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     301
_refine_ls_number_reflns         7718
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.888
_refine_ls_R_factor_all          0.1132
_refine_ls_R_factor_gt           0.0483
_refine_ls_shift/su_max          0.004
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0601P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1134
_refine_ls_wR_factor_ref         0.1295
_reflns_Friedel_coverage         0.000
_reflns_number_gt                3759
_reflns_number_total             7718
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c6cc05302e2.cif
_cod_data_source_block           mo_dm15876_0m
_cod_database_code               7124886
_shelxl_version_number           2014-3
_shelx_estimated_absorpt_t_max   0.988
_shelx_estimated_absorpt_t_min   0.966
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Ternary CH refined with riding coordinates:
 C8(H8)
2.b Secondary CH2 refined with riding coordinates:
 C18(H18A,H18B), C19(H19A,H19B)
2.c Aromatic/amide H refined with riding coordinates:
 C3(H3), C11(H11), C12(H12), C13(H13), C14(H14), C21(H21), C22(H22), C23(H23),
 C24(H24), C25(H25)
2.d Idealised Me refined as rotating group:
 C26(H26A,H26B,H26C), C27(H27A,H27B,H27C), C28(H28A,H28B,H28C)
;
_shelx_res_checksum              75267
_olex2_submission_special_instructions 'No special instructions were received'