Efficient Metal-Catalyzed Direct Benzylation and Allylic Alkylation of 2,4-Pentanediones
作者:Magnus Rueping、Boris J. Nachtsheim、Alexander Kuenkel
DOI:10.1021/ol063048b
日期:2007.3.1
[reaction: see text] A highly effective metal-catalyzed benzylation and allylic alkylation of 2,4-pentanediones has been developed. This new bismuth-catalyzed direct carbon-carbon bond forming reaction provides the corresponding monoalkylated dicarbonyl compounds in high yields after short reaction times using the lowest amounts of catalyst (1 mol %) and the free alcohol. In addition, a new route to
[反应:见正文]已经开发了高效的金属催化的2,4-戊二酮的苄基化和烯丙基烷基化。这种新的铋催化的直接碳-碳键形成反应可在较短的反应时间后,使用最低量的催化剂(1摩尔%)和游离醇,以高收率提供相应的单烷基化二羰基化合物。此外,提出了取代茚的新途径。