Practical Synthesis of N-Substituted Cyanamides via Tiemann Rearrangement of Amidoximes.
Lin, Chia-Chi; Hsieh, Tsung-Han; Liao, Pen-Yuan; Liao, Zhen-Yuan; Chang, Chih-Wei; Shih, Yu-Chiao; Yeh, Wen-Hsiung; Chien, Tun-Cheng; Organic letters 16 (2014) 892–895; doi:10.1021/ol403645y

data_1513486
_publ_section_title
;
 Practical Synthesis of N-Substituted Cyanamides via Tiemann Rearrangement
 of Amidoximes.
;
_journal_issue                   3
_journal_name_full               'Organic letters'
_journal_page_first              892
_journal_page_last               895
_journal_paper_doi               10.1021/ol403645y
_journal_volume                  16
_journal_year                    2014
_chemical_formula_moiety         'C14 H12 N4 O4 S'
_chemical_formula_sum            'C14 H12 N4 O4 S'
_chemical_formula_weight         332.34
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
_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                 102.188(12)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   26.815(7)
_cell_length_b                   6.466(2)
_cell_length_c                   17.138(4)
_cell_measurement_reflns_used    0
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      0
_cell_measurement_theta_min      0
_cell_volume                     2904.5(14)
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1986)'
_diffrn_ambient_temperature      200(2)
_diffrn_measured_fraction_theta_full 0.972
_diffrn_measured_fraction_theta_max 0.972
_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  0.1203
_diffrn_reflns_av_sigmaI/netI    0.1815
_diffrn_reflns_limit_h_max       30
_diffrn_reflns_limit_h_min       -32
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            7147
_diffrn_reflns_theta_full        25.24
_diffrn_reflns_theta_max         25.24
_diffrn_reflns_theta_min         1.55
_exptl_absorpt_coefficient_mu    0.250
_exptl_absorpt_correction_T_max  0.9950
_exptl_absorpt_correction_T_min  0.8623
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.520
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1376
_exptl_crystal_size_max          0.61
_exptl_crystal_size_mid          0.07
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.495
_refine_diff_density_min         -0.466
_refine_diff_density_rms         0.147
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.960
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     208
_refine_ls_number_reflns         2559
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.960
_refine_ls_R_factor_all          0.1655
_refine_ls_R_factor_gt           0.0648
_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^)+(0.1003P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1490
_refine_ls_wR_factor_ref         0.2212
_reflns_number_gt                1202
_reflns_number_total             2559
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol403645y_si_006.cif
_cod_data_source_block           ch13986
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_database_code               1513486