Origin of Stereocontrol in the Construction of the 12-Oxatricyclo[6.3.1.02,7]dodecane Ring System by Prins-Pinacol Reactions
Larry E. Overman; Paul S. Tanis; Journal of Organic Chemistry 75 (2010) 455–463; doi:10.1021/jo9024144

data_4025177
_publ_section_title
;
 Origin of Stereocontrol in the Construction of the
 12-Oxatricyclo[6.3.1.02,7]dodecane Ring System by Prins-Pinacol Reactions
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              455
_journal_page_last               463
_journal_paper_doi               10.1021/jo9024144
_journal_volume                  75
_journal_year                    2010
_chemical_formula_sum            'C18 H26 O2 S4'
_chemical_formula_weight         402.63
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXTL
_cell_angle_alpha                90.00
_cell_angle_beta                 98.321(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   13.5377(13)
_cell_length_b                   10.8139(10)
_cell_length_c                   12.5091(12)
_cell_measurement_reflns_used    998
_cell_measurement_temperature    163(2)
_cell_measurement_theta_max      28.16
_cell_measurement_theta_min      2.42
_cell_volume                     1812.0(3)
_computing_cell_refinement       'Bruker SMART/SAINT'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      163(2)
_diffrn_measured_fraction_theta_full 0.990
_diffrn_measured_fraction_theta_max 0.990
_diffrn_measurement_device_type  'Bruker SMART1K CCD'
_diffrn_measurement_method       'phi and omega'
_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  0.0288
_diffrn_reflns_av_sigmaI/netI    0.0237
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            19451
_diffrn_reflns_theta_full        28.30
_diffrn_reflns_theta_max         28.30
_diffrn_reflns_theta_min         1.52
_exptl_absorpt_coefficient_mu    0.533
_exptl_absorpt_correction_T_max  0.8917
_exptl_absorpt_correction_T_min  0.8650
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Bruker SADABS'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.476
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       cube
_exptl_crystal_F_000             856
_exptl_crystal_size_max          0.28
_exptl_crystal_size_mid          0.26
_exptl_crystal_size_min          0.22
_refine_diff_density_max         0.466
_refine_diff_density_min         -0.167
_refine_diff_density_rms         0.056
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.052
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     321
_refine_ls_number_reflns         4454
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.052
_refine_ls_R_factor_all          0.0303
_refine_ls_R_factor_gt           0.0268
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0386P)^2^+0.6968P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0705
_refine_ls_wR_factor_ref         0.0725
_reflns_number_gt                4038
_reflns_number_total             4454
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo9024144_si_003.cif
_cod_data_source_block           leo184
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to the built-in table from CIF Core dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 
;
_cod_database_code               4025177