1,3-dipolar cycloadditions induced by cation radicals. Formation of 1,2,4-triazoles from oxidative addition of 1,4-diphenylazomethane and aryl aldehyde phenylhydrazones to nitriles
作者:A.K.M.Mansurul Hoque、Albert C. Kovelesky、Lee Wang-Keun、Henry J. Shine
DOI:10.1016/s0040-4039(01)80911-4
日期:1985.1
Reaction of thianthrene cation radical perchlorate (Th.+ClO4−) with 1,4-diphenylazomethane (DPAM) in MeCN and EtCN led to the formation of 1,2,4-triazoles. Triazoles formation is attributed to oxidative cycloaddition of benzaldehyde benzylhydrazone, the tautomer of DPAM, to the solvent nitriles. In confirmation, analogous cycloadditions were achieved by reaction of Th.+ClO4− with some benzaldehyde
噻蒽阳离子自由基高氯酸盐反应(TH +。 CLO 4 - )与MeCN和EtCN 1,4- diphenylazomethane(DPAM)导致的1,2,4-三唑的形成。三唑的形成归因于DPAM的互变异构体苯甲醛苄hydr的氧化环加成到溶剂腈中。在确认时,类似的环加成由钍的反应来实现+。 CLO 4 -在相同的溶剂中苯甲醛一些苯腙。