A Remarkable Accelerating Effect of Ag-Salt on Intramolecular Cyclization of o-(1-Alkynyl)benzenesulfonamides
Deepak Kumar Barange; T. C. Nishad; N. Kumara Swamy; Venkanna Bandameedi; Dinesh Kumar; Bukkapattanam R. Sreekanth; K. Vyas; Manojit Pal; Journal of Organic Chemistry 72 (2007) 8547–8550; doi:10.1021/jo701470h

data_4023018
_publ_contact_author_email       manojitpal@drreddys.com
_publ_contact_author_fax         '91 40 2304 5438'
_publ_contact_author_name        'Manojit Pal'
_publ_contact_author_phone       '91 40 2304 5439'
_publ_section_title
;
 A Remarkable Accelerating Effect of Ag-Salt on
 Intramolecular Cyclization of o-(1-Alkynyl)benzenesulfonamides
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              8547
_journal_page_last               8550
_journal_paper_doi               10.1021/jo701470h
_journal_volume                  72
_journal_year                    2007
_chemical_formula_moiety         'C18 H19 N O2 S '
_chemical_formula_sum            'C18 H19 N O2 S'
_chemical_formula_weight         313.41
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_Int_Tables_number      2
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_audit_creation_date             2006-12-15
_audit_creation_method           'by CrystalStructure 3.6.0'
_cell_angle_alpha                66.370(12)
_cell_angle_beta                 69.458(12)
_cell_angle_gamma                73.57(1)
_cell_formula_units_Z            2
_cell_length_a                   9.173(3)
_cell_length_b                   9.411(3)
_cell_length_c                   10.685(3)
_cell_measurement_reflns_used    4103
_cell_measurement_temperature    298
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      2.4
_cell_volume                     780.3(4)
_diffrn_detector_area_resol_mean 7.31
_diffrn_measured_fraction_theta_full 0.9725
_diffrn_measured_fraction_theta_max 0.9410
_diffrn_measurement_device_type  'Rigaku Mercury'
_diffrn_measurement_method       \w
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.7107
_diffrn_reflns_av_R_equivalents  0.020
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -7
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -13
_diffrn_reflns_number            8680
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         27.48
_exptl_absorpt_coefficient_mu    0.214
_exptl_absorpt_correction_T_max  0.948
_exptl_absorpt_correction_T_min  0.891
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details
;
    Higashi, T. (1999). Program for Absorption Correction.
    Rigaku Corporation, Tokyo, Japan.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.334
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             332.00
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.50
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.35
_refine_diff_density_min         -0.35
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.165
_refine_ls_hydrogen_treatment    refall
_refine_ls_number_parameters     218
_refine_ls_number_reflns         2693
_refine_ls_R_factor_gt           0.0420
_refine_ls_shift/su_max          0.0000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
    Chebychev polynomial with 3 parameters (Carruthers & Watkin, 1979)
    15031.3000    20880.8000    6238.2500
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_ref         0.0470
_reflns_number_gt                2503
_reflns_number_total             3369
_reflns_threshold_expression     F^2^>2.0\s(F^2^)
_cod_data_source_file            jo701470h-File005.cif
_cod_data_source_block           '__DK_109'
_cod_original_formula_sum        'C18 H19 N O2 S '
_cod_database_code               4023018