Synthesis of vinylic lactones via palladium-catalyzed coupling of vinylic halides or triflates and unsaturated carboxylic acids
作者:Richard C. Larock、David J. Leuck、L.Wayne Harrison
DOI:10.1016/s0040-4039(00)82356-4
日期:1988.1
Vinylic halides or triflates react with 3-butenoic or 4-pentenoic acids in the presence of 5% Pd(OAc)2 or Pd(dba)2, -Bu4NCl, -PrNEt2 and either acetonitrile or ,-dimethylformamide at 80–100°C to afford the corresponding γ-alkenyl-γ-butyro- or δ-alkenyl-δ-valerolactones respectively by an intramolecular π-allylpalladium displacement process.
乙烯基卤化物或三氟甲磺酸酯与反应3-丁或在5%的Pd(OAC)存在下4-戊烯酸2或Pd(DBA)2,-Bu 4的NCI,-PrNEt 2和乙腈或,二甲基甲酰胺在80〜在100℃下通过分子内π-烯丙基钯置换工艺分别得到相应的γ-烯基-γ-丁酰基-或δ-烯基-δ-戊内酯。