Oxa- and Azacycle Formation via Migrative Cyclization of Sulfonylalkynol and Sulfonylalkynamide with N-Heterocyclic Carbene.
Wang, Yinli; Oriez, Raphaël; Kuwano, Satoru; Yamaoka, Yousuke; Takasu, Kiyosei; Yamada, Ken-ichi; The Journal of organic chemistry 81 (2016) 2652–2664; doi:10.1021/acs.joc.6b00182

data_4036647
_publ_section_title
;
 Oxa- and Azacycle Formation via Migrative Cyclization of Sulfonylalkynol
 and Sulfonylalkynamide with N-Heterocyclic Carbene.
;
_journal_issue                   6
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              2652
_journal_page_last               2664
_journal_paper_doi               10.1021/acs.joc.6b00182
_journal_volume                  81
_journal_year                    2016
_chemical_formula_moiety         'C18 H27 N O4 S'
_chemical_formula_sum            'C18 H27 N O4 S'
_chemical_formula_weight         353.48
_chemical_melting_point          361
_space_group_crystal_system      monoclinic
_space_group_IT_number           15
_space_group_name_Hall           '-C 2yc'
_space_group_name_H-M_alt        'C 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_cell_angle_alpha                90.0000
_cell_angle_beta                 92.196(4)
_cell_angle_gamma                90.0000
_cell_formula_units_Z            8
_cell_length_a                   23.169(4)
_cell_length_b                   7.2093(16)
_cell_length_c                   21.235(4)
_cell_measurement_reflns_used    1125
_cell_measurement_temperature    93
_cell_measurement_theta_max      68.20
_cell_measurement_theta_min      25.60
_cell_volume                     3544.3(12)
_computing_cell_refinement       'CrystalClear-SM Expert 2.1 b42'
_computing_data_collection       'CrystalClear-SM Expert 2.1 b42 (Rigaku, 2015)'
_computing_data_reduction        'CrystalClear-SM Expert 2.1 b42'
_computing_molecular_graphics    'CrystalStructure 4.1'
_computing_publication_material  'CrystalStructure 4.1 (Rigaku, 2014)'
_computing_structure_refinement  'SHELXL2013 (Sheldrick, 2008)'
_computing_structure_solution    'Il Milione (Burla, et al., 2007)'
_diffrn_ambient_temperature      93
_diffrn_detector_area_resol_mean 5.814
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Rigaku XtaLAB P200'
_diffrn_measurement_method       \w
_diffrn_radiation_type           'Cu K\a'
_diffrn_radiation_wavelength     1.54187
_diffrn_reflns_av_R_equivalents  0.0429
_diffrn_reflns_Laue_measured_fraction_full 0.994
_diffrn_reflns_Laue_measured_fraction_max 0.994
_diffrn_reflns_limit_h_max       27
_diffrn_reflns_limit_h_min       -27
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -5
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            13023
_diffrn_reflns_point_group_measured_fraction_full 0.994
_diffrn_reflns_point_group_measured_fraction_max 0.994
_diffrn_reflns_theta_full        67.687
_diffrn_reflns_theta_max         68.252
_diffrn_reflns_theta_min         5.547
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.805
_exptl_absorpt_correction_T_max  0.697
_exptl_absorpt_correction_T_min  0.427
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'REQAB (Rigaku, 1998)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.325
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1520.00
_exptl_crystal_size_max          0.200
_exptl_crystal_size_mid          0.200
_exptl_crystal_size_min          0.200
_refine_diff_density_max         0.40
_refine_diff_density_min         -0.38
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.116
_refine_ls_hydrogen_treatment    constr
_refine_ls_number_parameters     218
_refine_ls_number_reflns         3223
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0417
_refine_ls_R_factor_gt           0.0369
_refine_ls_shift/su_max          0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w = 1/[\s^2^(Fo^2^)+(0.0580P)^2^+3.5621P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1010
_refine_ls_wR_factor_ref         0.1122
_reflns_number_gt                2884
_reflns_number_total             3223
_reflns_threshold_expression     F^2^>2.0\s(F^2^)
_cod_data_source_file            jo6b00182_si_003.cif
_cod_data_source_block           10
_cod_database_code               4036647