TFP as a ligand in Au(I)-catalyzed dihydropyran synthesis. Unprecedented rearrangement of dihydropyrans into cyclopentenones
Eliska Matousova; Ales Ruzicka; Jiri Kunes; Jarmila Kralova; Milan Pour; Chem.Commun. 47 (2011) 9390–; doi:10.1039/c1cc13525b

data_7106777
_publ_section_title
;
 TFP as a ligand in Au(I)-catalyzed dihydropyran synthesis. Unprecedented
 rearrangement of dihydropyrans into cyclopentenones
;
_journal_name_full               Chem.Commun.
_journal_page_first              9390
_journal_paper_doi               10.1039/c1cc13525b
_journal_volume                  47
_journal_year                    2011
_chemical_formula_moiety         'C18 H18 O4'
_chemical_formula_sum            'C18 H18 O4'
_chemical_formula_weight         298.32
_space_group_IT_number           61
_symmetry_cell_setting           orthorhombic
_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
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   12.9230(7)
_cell_length_b                   7.4390(12)
_cell_length_c                   30.766(2)
_cell_measurement_reflns_used    16499
_cell_measurement_temperature    150(1)
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      1
_cell_volume                     2957.7(5)
_computing_cell_refinement       'COLLECT and DENZO'
_computing_data_collection
'COLLECT (Hooft, 1998) and DENZO (Otwinowski & Minor, 1997)'
_computing_data_reduction        'COLLECT and DENZO'
_computing_molecular_graphics    'PLATON (Spek, 2003)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      150(1)
_diffrn_detector_area_resol_mean 9.091
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'Bruker Nonius KappaCCD area detector'
_diffrn_measurement_method       '\f and \w scans to fill the Ewald sphere'
_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  0.0567
_diffrn_reflns_av_sigmaI/netI    0.0388
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       33
_diffrn_reflns_limit_l_min       -39
_diffrn_reflns_number            16377
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         2.65
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.094
_exptl_absorpt_correction_T_max  0.986
_exptl_absorpt_correction_T_min  0.977
_exptl_absorpt_correction_type   integration
_exptl_absorpt_process_details
;
Gaussian integration (Coppens, 1970)
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.340
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1264
_exptl_crystal_size_max          0.37
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.16
_refine_diff_density_max         0.356
_refine_diff_density_min         -0.239
_refine_diff_density_rms         0.048
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.140
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     199
_refine_ls_number_reflns         3373
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.140
_refine_ls_R_factor_all          0.0853
_refine_ls_R_factor_gt           0.0548
_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^)+(0.0353P)^2^+1.8542P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1065
_refine_ls_wR_factor_ref         0.1215
_reflns_number_gt                2474
_reflns_number_total             3373
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c1cc13525b.txt
_cod_data_source_block           shelxl
_cod_original_cell_volume        2957.7(6)
_cod_database_code               7106777