β-Keto -δ-valerolactone: synthesis and use as methylvinylketone anion equivalent in michael additions
作者:Jean d'Angelo、Domingo Gomez-Pardo
DOI:10.1016/0040-4039(91)80689-4
日期:1991.6
β-Keto-δ-valerolactone 11 was prepared from 3-butyn-l-ol 6 in 5 steps (50 % overall yield). This lactone was added to Michael acceptors 13, 17, 19 and 25, giving adducts 14, 18, 20 and 26 respectively.