3-Allyl substituted five, six and seven membered ring lactams are readily available in good yields and reasonable selectivity by a formal Meerwein Eschenmoser Claisen [3,3] rearrangement, using the readily available N,N-dialkylalkoxymethylene iminium salts and lithium alkoxides derived from allyl alcohols.
通过正式的Meerwein Eschenmoser Claisen [3,3]重排,使用易于获得的N,N-二烷基烷氧基
亚甲基亚胺盐和由
锂衍生的醇
锂,可以很容易地以高收率和合理的选择性获得3-烯丙基取代的五,六和七元内酰胺
烯丙醇。