An unexpected two-group migration involving a sulfonynamide to nitrile rearrangement. Mechanistic studies of a thermal N –> C tosyl rearrangement.
Bendikov, Michael; Duong, Hieu M.; Bolanos, Eduardo; Wudl, Fred; Organic letters 7 (2005) 783–786; doi:10.1021/ol0477327

data_1506482
_publ_section_title
;
 An unexpected two-group migration involving a sulfonynamide to nitrile
 rearrangement. Mechanistic studies of a thermal N --&gt; C tosyl
 rearrangement.
;
_journal_issue                   5
_journal_name_full               'Organic letters'
_journal_page_first              783
_journal_page_last               786
_journal_paper_doi               10.1021/ol0477327
_journal_volume                  7
_journal_year                    2005
_chemical_formula_moiety         'C20 H21 N O5 S'
_chemical_formula_sum            'C20 H21 N O5 S'
_chemical_formula_weight         387.44
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                82.933(3)
_cell_angle_beta                 81.248(3)
_cell_angle_gamma                69.356(3)
_cell_formula_units_Z            2
_cell_length_a                   7.8726(13)
_cell_length_b                   8.0401(13)
_cell_length_c                   17.080(3)
_cell_measurement_reflns_used    2096
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      25.17
_cell_measurement_theta_min      2.79
_cell_volume                     997.1(3)
_computing_cell_refinement       'Bruker SMART'
_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, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.916
_diffrn_measured_fraction_theta_max 0.916
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_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  0.0176
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_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            6477
_diffrn_reflns_theta_full        28.31
_diffrn_reflns_theta_max         28.31
_diffrn_reflns_theta_min         2.42
_diffrn_standards_decay_%        0
_exptl_absorpt_coefficient_mu    0.192
_exptl_absorpt_correction_T_max  0.962
_exptl_absorpt_correction_T_min  0.901
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Sadabs (Bruker)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.290
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'cut prism'
_exptl_crystal_F_000             408
_exptl_crystal_size_max          0.38
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.254
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_refine_diff_density_rms         0.040
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.006
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     247
_refine_ls_number_reflns         4549
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.006
_refine_ls_R_factor_all          0.0782
_refine_ls_R_factor_gt           0.0456
_refine_ls_shift/su_max          0.04
_refine_ls_shift/su_mean         0.01
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0616P)^2^+0.2588P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1175
_refine_ls_wR_factor_ref         0.1411
_reflns_number_gt                2974
_reflns_number_total             4549
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol0477327si20041105_112008.cif
_cod_data_source_block           wd203sm
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               1506482