Gold-Catalyzed [4C+2C] Cycloadditions of Allenedienes, including an Enantioselective Version with New Phosphoramidite-Based Catalysts: Mechanistic Aspects of the Divergence between [4C+3C] and [4C+2C] Pathways
Isaac Alonso; Beatriz Trillo; Fernando López; Sergi Montserrat; Gregori Ujaque; Luis Castedo; Agustí Lledós; Jose L. Mascareñas; Journal of the American Chemical Society 131 (2009) 13020–13030; doi:10.1021/ja905415r

data_4105007
_publ_contact_author_address
;Department of Organic Chemistry
University of Santiago de Compostela
Santiago de Compostela
Santiago de Compostela, Spain
;
_publ_contact_author_email       joseluis.mascarenas@usc.es
_publ_contact_author_name        'Trillo B., Lopez F., Mascarenas, J. L.'
_publ_section_title
;
 Gold-Catalyzed [4C+2C] Cycloadditions of Allenedienes, including an
 Enantioselective Version with New Phosphoramidite-Based Catalysts:
 Mechanistic Aspects of the Divergence between [4C+3C] and [4C+2C]
 Pathways
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              13020
_journal_page_last               13030
_journal_paper_doi               10.1021/ja905415r
_journal_volume                  131
_journal_year                    2009
_chemical_absolute_configuration unk
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         'C15 H24 O2'
_chemical_formula_sum            'C15 H24 O2'
_chemical_formula_weight         236.34
_space_group_IT_number           33
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      33
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_conform_dict_location     ftp://ftp.iucr.org/pub/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.4
_audit_creation_date             2009-04-06T18:42:27-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   13.2005(6)
_cell_length_b                   16.7409(9)
_cell_length_c                   5.9633(3)
_cell_measurement_reflns_used    3518
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      25.28
_cell_measurement_theta_min      2.43
_cell_measurement_wavelength     0.71073
_cell_volume                     1317.82(11)
_computing_cell_refinement       'APEX2 v2009.3-0 (BRUKER AXS, 2009)'
_computing_data_collection       'APEX2 v2009.3-0 (BRUKER AXS, 2009)'
_computing_data_reduction        'APEX2 v2009.3-0 (BRUKER AXS, 2009)'
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SIR97 (Altomare et al., 1998)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker X8 kappa APEXII CCD'
_diffrn_measurement_method       'omega and phi scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0621
_diffrn_reflns_av_unetI/netI     0.0349
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       20
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            16374
_diffrn_reflns_theta_full        26.4
_diffrn_reflns_theta_max         26.4
_diffrn_reflns_theta_min         1.96
_exptl_absorpt_coefficient_mu    0.077
_exptl_absorpt_correction_T_max  0.9930
_exptl_absorpt_correction_T_min  0.8225
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'BRUKER AXS - SADABS'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.191
_exptl_crystal_description       plate
_exptl_crystal_F_000             520
_exptl_crystal_size_max          0.78
_exptl_crystal_size_mid          0.19
_exptl_crystal_size_min          0.07
_refine_diff_density_max         0.226
_refine_diff_density_min         -0.182
_refine_diff_density_rms         0.041
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.07
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     162
_refine_ls_number_reflns         1490
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.07
_refine_ls_R_factor_all          0.051
_refine_ls_R_factor_gt           0.0432
_refine_ls_shift/su_max          0
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0563P)^2^+0.4782P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1107
_refine_ls_wR_factor_ref         0.115
_reflns_number_gt                1324
_reflns_number_total             1490
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            ja905415r_si_3g.cif
_cod_data_source_block           lm03bt1n
_cod_database_code               4105007