Thermal transformations of oxazole endoperoxides: Rearrangements, fragmentations and methanol additions
作者:Klaus Gollnick、Sigrid Koegler
DOI:10.1016/0040-4039(88)85320-6
日期:1988.1
Oxazole endoperoxides carrying a phenyl group at C-2 rearrange to triacylamines ; those carrying a hydrogen atom at C-2 undergo a fragmentation into 1:1 mixtures of nitriles (or HCN) and anhydrides , whereas methyl substitution at C-2 gives rise to competition between these two modes of reaction. Methanol addition to leads to4-methoxy-5-hydroperoxides which easily transform into methyl esters and diacylamines