Palladium‐Catalyzed <i>S</i>‐Allylation of Vinyl Carbinols – Total Syntheses of Carotenoids by Julia‐Kocienski Olefination
作者:Aleksei N. Golikov、Chibeom Seo、Jae Hwan Lee、Sangho Koo
DOI:10.1002/adsc.202301055
日期:2024.1.9
Palladium catalyzed S-allylation of vinyl carbinols from ionones (or conjugated carbonyls) with 2-mercapto-1,3-benzothiazole (BT-SH) provides versatile C15 dienyl benzothiazolyl (BT) sulfides. This Pd(dppe)Cl2-catalyzed S-allylation is highly selective for free allylic alcohols in the presence of allylic acetates, resulting in 3- or 4-acetoxy C15 dienyl BT-sulfides suitable for xanthophyll synthesis