Li2PdCl4 and 3-butenoic or 4-pentenoic acids, followed by refluxing with K2CO3, affords high yields of the corresponding γ-alkenyl-γ-butyro- or δ-alkenyl-δ-valerolactones by an intramolecular π-allylpalladium displacement process.
乙烯基汞氯化物,Li 2 PdCl 4和3-
丁烯酸或
4-戊烯酸的反应,然后与K 2 CO 3回流,得到相应的γ-
烯基-γ-丁丁-或δ-
烯基-δ-的高产率。
戊内酯通过分子内π-
烯丙基
钯置换工艺制备。