Acid-catalyzed regioselective sulfetherification of alkenols and stereoselective rearrangement of tetrahydrofuran to tetrahydropyran.
Wang, Haining; Huang, Deshun; Cheng, Donghao; Li, Lijun; Shi, Yian; Organic letters 13 (2011) 1650–1653; doi:10.1021/ol200127n

data_1502046
_publ_section_title
;
 Acid-catalyzed regioselective sulfetherification of alkenols and
 stereoselective rearrangement of tetrahydrofuran to tetrahydropyran.
;
_journal_issue                   7
_journal_name_full               'Organic letters'
_journal_page_first              1650
_journal_page_last               1653
_journal_paper_doi               10.1021/ol200127n
_journal_volume                  13
_journal_year                    2011
_chemical_formula_sum            'C20 H26 O3 S'
_chemical_formula_weight         346.47
_space_group_IT_number           43
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'F 2 -2d'
_symmetry_space_group_name_H-M   'F d d 2'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            16
_cell_length_a                   23.497(5)
_cell_length_b                   52.752(11)
_cell_length_c                   5.7732(12)
_cell_measurement_reflns_used    4753
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.47
_cell_measurement_theta_min      1.90
_cell_volume                     7156(3)
_computing_cell_refinement       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_collection       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_reduction        'CrystalClear (Rigaku Inc., 2008)'
_computing_molecular_graphics
;
 Mercury: visualization and analysis of crystal structures, C. F. Macrae,
 P. R. Edgington, P. McCabe, E. Pidcock, G. P. Shields, R. Taylor,
 M. Towler and J. van de Streek, J. Appl. Cryst., 39, 453-457, 2006.
;
_computing_publication_material  'SHELX-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELX-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELX-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      173(2)
_diffrn_detector_area_resol_mean 28.5714
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'MM007HF + CCD (Saturn724+)'
_diffrn_measurement_method       '\w scans at fixed \c = 45\%'
_diffrn_radiation_monochromator  Confocal
_diffrn_radiation_source         'Rotating Anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0635
_diffrn_reflns_av_sigmaI/netI    0.0530
_diffrn_reflns_limit_h_max       30
_diffrn_reflns_limit_h_min       -30
_diffrn_reflns_limit_k_max       68
_diffrn_reflns_limit_k_min       -68
_diffrn_reflns_limit_l_max       5
_diffrn_reflns_limit_l_min       -7
_diffrn_reflns_number            13434
_diffrn_reflns_theta_full        27.47
_diffrn_reflns_theta_max         27.47
_diffrn_reflns_theta_min         1.90
_exptl_absorpt_coefficient_mu    0.196
_exptl_absorpt_correction_T_max  0.9941
_exptl_absorpt_correction_T_min  0.9600
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'CrystalClear (Rigaku Inc., 2008)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.286
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             2976
_exptl_crystal_size_max          0.21
_exptl_crystal_size_mid          0.05
_exptl_crystal_size_min          0.03
_refine_diff_density_max         0.391
_refine_diff_density_min         -0.411
_refine_diff_density_rms         0.121
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.01(13)
_refine_ls_extinction_coef       0.0016(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.168
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     219
_refine_ls_number_reflns         3498
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.168
_refine_ls_R_factor_all          0.0737
_refine_ls_R_factor_gt           0.0679
_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^)+(0.0741P)^2^+10.9651P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1658
_refine_ls_wR_factor_ref         0.1705
_reflns_number_gt                3191
_reflns_number_total             3498
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol200127n_si_007.cif
_cod_data_source_block           a
_cod_original_sg_symbol_H-M      Fdd2
_cod_database_code               1502046