作者:E. N. Ulomskii、S. L. Deev、A. V. Tkachev、I. K. Moiseev、V. L. Rusinov
DOI:10.1023/a:1015538322029
日期:——
Reaction of 3-nitro- and 3-ethoxycarbonyl-1,2,4-triazolo[5,1-c]-1,2,4-triazin-4-ones with 1-adamantanol (or 1-adamantyl nitrate) in concentrated sulfuric acid or with 1-bromoadamantane in sulfolane affords N-adamantyl derivatives. The adamantylation of 3-nitro-1,4-dihydro-7H-1,2,4-triazolo[5,1-c]-1,2,4-triazin-4-one yields a mixture of N-8- and N-1-isomers that undergo interconversion in concentrated sulfuric acid along intermolecular mechanism.