Eco-efficient, regioselective and rapid access to 4,5-disubstituted 1,2,3-thiadiazoles via [3 + 2] cycloaddition of α-enolicdithioesters with tosyl azide under solvent-free conditions
Singh, Maya Shankar; Nagaraju, Anugula; Verma, Girijesh Kumar; Shukla, Gaurav; Verma, Rajiv Kumar; Srivastava, Abhijeet; Raghuvanshi, Keshav; Green Chemistry 15 (2013) 954–; doi:10.1039/c3gc37047j

data_7209840
_publ_section_title
;
 Eco-efficient, regioselective and rapid access to 4,5-disubstituted
 1,2,3-thiadiazoles via [3 + 2] cycloaddition of \a-enolicdithioesters
 with tosyl azide under solvent-free conditions
;
_journal_issue                   4
_journal_name_full               'Green Chemistry'
_journal_page_first              954
_journal_paper_doi               10.1039/c3gc37047j
_journal_volume                  15
_journal_year                    2013
_chemical_formula_moiety         'C10 H8 N2 O S2'
_chemical_formula_sum            'C10 H8 N2 O S2'
_chemical_formula_weight         236.32
_chemical_melting_point          379
_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                109.76(2)
_cell_angle_beta                 90.103(17)
_cell_angle_gamma                90.706(18)
_cell_formula_units_Z            2
_cell_length_a                   7.4617(15)
_cell_length_b                   7.5189(18)
_cell_length_c                   9.840(2)
_cell_measurement_reflns_used    598
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      28.9250
_cell_measurement_theta_min      2.9680
_cell_volume                     519.5(2)
_computing_cell_refinement
;
CrysAlisPro, Agilent Technologies,
Version 1.171.34.49 (release 20-01-2011 CrysAlis171 .NET)
(compiled Jan 20 2011,15:58:25)
;
_computing_data_collection
;
CrysAlisPro, Agilent Technologies,
Version 1.171.34.49 (release 20-01-2011 CrysAlis171 .NET)
(compiled Jan 20 2011,15:58:25)
;
_computing_data_reduction
;
CrysAlisPro, Agilent Technologies,
Version 1.171.34.49 (release 20-01-2011 CrysAlis171 .NET)
(compiled Jan 20 2011,15:58:25)
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 16.0938
_diffrn_measured_fraction_theta_max 0.684
_diffrn_measurement_device_type  'Xcalibur, Eos'
_diffrn_measurement_method       '\w 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  0.0109
_diffrn_reflns_av_sigmaI/netI    0.0409
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            2760
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         28.99
_diffrn_reflns_theta_min         2.97
_exptl_absorpt_coefficient_mu    0.483
_exptl_absorpt_correction_T_max  0.865
_exptl_absorpt_correction_T_min  0.793
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Agilent Technologies,
Version 1.171.34.49 (release 20-01-2011 CrysAlis171 .NET)
(compiled Jan 20 2011,15:58:25)
Empirical absorption correction using spherical harmonics,
implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.511
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             244
_exptl_crystal_size_max          0.5
_exptl_crystal_size_mid          0.4
_exptl_crystal_size_min          0.3
_refine_diff_density_max         0.227
_refine_diff_density_min         -0.235
_refine_diff_density_rms         0.056
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.024
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     136
_refine_ls_number_reflns         2760
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.024
_refine_ls_R_factor_all          0.0637
_refine_ls_R_factor_gt           0.0426
_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^)+(0.0556P)^2^+0.0449P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0991
_refine_ls_wR_factor_ref         0.1154
_reflns_number_gt                1397
_reflns_number_total             2760
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            c3gc37047j.txt
_cod_data_source_block           ox-am
_cod_database_code               7209840