The rhenium-catalyzed synthesis of cyclopentenone derivatives via double aldol condensation and successive Nazarov reaction is described. The cyclopentenones were converted to the corresponding cyclopentadienes using organolithium reagents. Cyclopentadienes with four different substituents could be synthesized by stepwise double aldol condensation using a ketone and two types of aldehydes, followed by treatment with an organolithium reagent.
通过
铼催化的双Aldol缩合反应及随后的Nazarov反应,描述了
环戊烯酮衍
生物的合成方法。
环戊烯酮可利用
有机锂试剂转化为相应的
环戊二烯。通过逐步双Aldol缩合反应,以酮和两种醛为原料,随后用
有机锂试剂处理,可以合成具有四种不同取代基的
环戊二烯。