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has been cited by the following article:

• TITLE: Dimerization of 1-Phenyl-1H-Tetrazole-5-Thiol over Metalloporphyrin Catalysts

  AUTHORS: Ya-hong Wu, Jun-wei Yang, Yan Yan, Shan-ling Tong, Di Tan, Jian Yu, Lin Yu

  KEYWORDS: Disulfide; Dimerizatoin; Catalytic Conversion; Metalloporphyrin Catalyst

  JOURNAL NAME: Advances in Chemical Engineering and Science, Vol.2 No.3, July 11, 2012

  ABSTRACT: In an alkaline methanol solution, dimerization of 1-phenyl-1H-tetrazole-5-thiol (HL) was carried out over metalloporphyrin catalysts under mild conditions. The dimer product, 1,2-bis (1-phenyl-1H-tetrazol-5-yl) disulfane (L-L), was characterized by determinations of infrared (IR), HPLC, NMR and elementary analysis respectively. In situ UV-Vis spectroscopic analysis and cyclic voltammetric (CV) determinations suggested that the active intermediate for L-L formation is an axially ligated complex, RS-MnⅢTHPP, which decomposes into a MnⅡTHPP molecule and a stable radical (SR) for coupling to form the disulfane. Meanwhile MnIITHPP molecule can be oxidized easily to form MnⅢTHPP species again by oxygen from the air for using in next catalytic circle.