An efficient synthetic method was developed to access isoquinoline-derived diene esters from enynones and isoquinoline-N-oxides in an atom-economic manner. The isoquinoline-substituted diene esters were obtained in moderate to excellent yields via [3 + 2]-cycloaddition and isoxazole ring opening followed by a [1,5]-sigmatropic rearrangement reaction, which resulted in one C–C and two C–O bond formations
开发了一种有效的合成方法,以原子经济的方式从烯酮和
异喹啉-N-氧化物中获得
异喹啉衍生的二烯酯。
异喹啉取代的二烯酯通过 [3 + 2]-环加成和
异恶唑开环,然后进行 [1,5]-σ 重排反应,以中等至极好的收率获得,这导致一个 C-C 和两个 C-O键的形成。此外,
喹啉-2(1 H )-亚基取代的 1,5-二酮是通过烯酮与
喹啉-N-氧化物的反应获得的,产率非常高。