作者:Alan R. Katritzky、Wojciech Kuzmierkiewic、Subbu Perumal
DOI:10.1002/hlca.19910740831
日期:1991.12.11
The thermal isomerizations of N-[α-(alkylthio)alkyl]- and N-[α-(arylthio)alkyl]benzotriazoles have been investigated under N2 atmospheres (i) in toluene, xylene, MeOH, or EtOH, in the presence of acid catalysts and (ii) in the absence of solvent. The sulfide isomerization rates depend on the number of H-atoms carried by the C-atom attached to the N-atom of the benzotriazole: tertiary (no hydrogen)
N- [α-(烷硫基)烷基]-和N- [α-(芳硫基烷基)烷基]苯并三唑的热异构化已经在N 2气氛下(i)在甲苯,二甲苯,MeOH或EtOH中进行了研究酸催化剂和(ii)在不存在溶剂的情况下。硫化物的异构化速率取决于与苯并三唑的N原子连接的C原子携带的H原子数:叔(无氢)>仲(1氢)>伯(2氢)。该结果支持了异氰酸酯化机理,该机理涉及杂化NC键裂解并形成sulf /碳原子和苯并三唑离子。