Gold-catalyzed selective oxidation of 4-oxahepta-1,6-diynes to 2H-pyran-3(6H)-ones and chromen-3(4H)-ones via beta-gold vinyl cation intermediates
Kegong Ji; Xiang Liu; Bowen Du; Fang Yang; Jinming Gao; Chem.Commun. 51 (2015) 10318–; doi:10.1039/C5cc02952J

data_7117302
_publ_section_title
;
 Gold-catalyzed selective oxidation of 4-oxahepta-1,6-diynes to
 2H-pyran-3(6H)-ones and chromen-3(4H)-ones via beta-gold vinyl cation
 intermediates
;
_journal_name_full               Chem.Commun.
_journal_page_first              10318
_journal_paper_doi               10.1039/C5cc02952J
_journal_volume                  51
_journal_year                    2015
_chemical_formula_moiety         'C20 H18 O2'
_chemical_formula_sum            'C20 H18 O2'
_chemical_formula_weight         290.34
_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     iterative
_atom_sites_solution_secondary   difmap
_audit_creation_date             2015-04-03
_audit_creation_method
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Olex2 1.2
(compiled 2014.11.28 svn.r3106 for OlexSys, GUI svn.r4959)
;
_audit_update_record
;
2015-04-10 deposited with the CCDC.
2015-05-13 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   15.2594(7)
_cell_length_b                   10.4298(5)
_cell_length_c                   19.4355(9)
_cell_measurement_reflns_used    1844
_cell_measurement_temperature    293.51(10)
_cell_measurement_theta_max      23.9870
_cell_measurement_theta_min      3.9310
_cell_volume                     3093.2(3)
_computing_cell_refinement
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.33 (release 27-03-2014 CrysAlis171 .NET)
(compiled Mar 27 2014,17:12:48)
;
_computing_data_collection
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CrysAlisPro, Agilent Technologies,
Version 1.171.37.33 (release 27-03-2014 CrysAlis171 .NET)
(compiled Mar 27 2014,17:12:48)
;
_computing_data_reduction
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.33 (release 27-03-2014 CrysAlis171 .NET)
(compiled Mar 27 2014,17:12:48)
;
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2008)'
_computing_structure_solution
;
Superflip (Palatinus & Chapuis, 2007;Palatinus & van der Lee, 2008;
Palatinus et al., 2012)
;
_diffrn_ambient_environment      air
_diffrn_ambient_temperature      293.51(10)
_diffrn_detector                 'CCD plate'
_diffrn_detector_area_resol_mean 16.0733
_diffrn_detector_type            Eos
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_details
;
  1 omega  -13.00   94.00   1.0000    5.0000
omega____ theta____ kappa____ phi______ frames
    -       20.7416   19.0000 -120.0000 107

  2 omega  -12.00   37.00   1.0000    5.0000
omega____ theta____ kappa____ phi______ frames
    -       20.7416  -57.0000 -120.0000 49
;
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'SuperNova, Dual, Cu at zero, Eos'
_diffrn_measurement_method       '\w scans'
_diffrn_orient_matrix_UB_11      -0.0345108000
_diffrn_orient_matrix_UB_12      -0.0456064000
_diffrn_orient_matrix_UB_13      0.0012926000
_diffrn_orient_matrix_UB_21      -0.0284996000
_diffrn_orient_matrix_UB_22      0.0473149000
_diffrn_orient_matrix_UB_23      0.0135082000
_diffrn_orient_matrix_UB_31      -0.0126385000
_diffrn_orient_matrix_UB_32      0.0172673000
_diffrn_orient_matrix_UB_33      -0.0338924000
_diffrn_radiation_monochromator  mirror
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0368
_diffrn_reflns_av_unetI/netI     0.0476
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            8066
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         26.02
_diffrn_reflns_theta_min         3.39
_diffrn_source                   'SuperNova (Mo) X-ray Source'
_exptl_absorpt_coefficient_mu    0.079
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.68569
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Agilent Technologies,
Version 1.171.37.33 (release 27-03-2014 CrysAlis171 .NET)
(compiled Mar 27 2014,17:12:48)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            'clear light colourless'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_modifier   light
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.247
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1232
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.32
_exptl_crystal_size_min          0.31
_refine_diff_density_max         0.206
_refine_diff_density_min         -0.207
_refine_diff_density_rms         0.045
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.069
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     199
_refine_ls_number_reflns         3032
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.069
_refine_ls_R_factor_all          0.0820
_refine_ls_R_factor_gt           0.0536
_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^)+(0.0521P)^2^+0.4024P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1186
_refine_ls_wR_factor_ref         0.1393
_reflns_number_gt                2077
_reflns_number_total             3032
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c5cc02952j2.cif
_cod_data_source_block           qiuyf_69b
_cod_database_code               7117302
_reflns_odcompleteness_completeness 99.55
_reflns_odcompleteness_iscentric 1
_reflns_odcompleteness_theta     26.32
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
2.a Ternary CH refined with riding coordinates:
 C1(H1)
2.b Secondary CH2 refined with riding coordinates:
 C3(H3A,H3B), C2(H2A,H2B), C12(H12A,H12B), C14(H14A,H14B)
2.c Aromatic/amide H refined with riding coordinates:
 C19(H19), C7(H7), C8(H8), C20(H20), C18(H18), C5(H5), C17(H17), C6(H6),
 C16(H16)
;
_olex2_date_sample_data_collection 2015-04-02
_olex2_submission_special_instructions 'No special instructions were received'