Trialkylamine-mediated intramolecular cyclization of pent-4-enoyl chlorides was studied. Substitution with a tertiary alkyl group at the 2-position gave cyclopent-2-en-1-ones, while substitution with an aromatic group gave enol esters, which were formed by O-acylation of initially formed 3-chlorocyclopentanones with ketenes.
研究了
三烷基胺介导的戊-4-烯酰
氯分子内环化。在 2 位用叔烷基取代可得到环戊-2-烯-1-酮,而用芳香基取代可得到烯醇酯,烯醇酯是由最初形成的 3-
氯环戊酮与烯酮发生 O-酰化反应而形成的。