%0 Journal Article
%T Dimerization of 1-Phenyl-1<i>H</i>-Tetrazole-5-Thiol over Metalloporphyrin Catalysts
%A Ya-hong Wu
%A Jun-wei Yang
%A Yan Yan
%A Shan-ling Tong
%A Di Tan
%A Jian Yu
%A Lin Yu
%J Advances in Chemical Engineering and Science
%P 392-397
%@ 2160-0406
%D 2012
%I Scientific Research Publishing
%R 10.4236/aces.2012.23047
%X In an alkaline methanol solution, dimerization of 1-phenyl-1<i>H</i>-tetrazole-5-thiol (HL) was carried out over metalloporphyrin catalysts under mild conditions. The dimer product, 1,2-bis (1-phenyl-1<i>H</i>-tetrazol-5-yl) disulfane (L-L), was characterized by determinations of infrared (IR), HPLC, NMR and elementary analysis respectively. <i>In situ</i> UV-Vis spectroscopic analysis and cyclic voltammetric (CV) determinations suggested that the active intermediate for L-L formation is an axially ligated complex, RS-Mn<sup>Άσ</sup>THPP, which decomposes into a Mn<sup>Άς</sup>THPP molecule and a stable radical (SR) for coupling to form the disulfane. Meanwhile MnIITHPP molecule can be oxidized easily to form Mn<sup>Άσ</sup>THPP species again by oxygen from the air for using in next catalytic circle.
%K Disulfide
%K Dimerizatoin
%K Catalytic Conversion
%K Metalloporphyrin Catalyst
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=20841