The thermal reactions of some 6-methyl-5-[(substituted hydrazino)methyl]-2,4(1H,3H)-pyrimidinediones (1) were investigated. The 1,5-hydrogen shift in 1 gave 5,6-dihydro-5,6-bis(methylene)-2,4(1H,3H)-pyrimidinedione intermediates, while the 1,2-hydrogen shift in 1 gave azomethine imine intermediates. These reaction profiles depend on the substituents of hydrazone moieties.
研究了一些 6-甲基-5-[(取代
肼基)甲基]-2,4(1H,3H)-
嘧啶二酮 (1) 的热反应。 1中的1,5-氢转移得到5,6-二氢-5,6-双(亚甲基)-2,4(1H,3H)-
嘧啶二酮中间体,而1中的1,2-氢转移得到偶氮甲碱
亚胺中间体。这些反应曲线取决于腙部分的取代基。