Wittig Reactions of Trialkylphosphine-derived Ylides: New Directions and Applications in Organic Synthesis
作者:James McNulty、David McLeod、Priyabrata Das、Carlos Zepeda-Velázquez
DOI:10.1080/10426507.2014.980907
日期:2015.6.3
ylides derived from short-chain trialkylphosphines in the Wittig-type olefination reactions toward the synthesis of alkenes, including stilbenes, styrenes, and 1,3-dienes, as well as reagents for homologation reactions, are described. The methods allow easy access to alkenes with high (E)-stereoselectivity in good yield. These reactions are conducted with weak bases in aqueous media, which allows easy
图形摘要 摘要 在 Wittig 型烯化反应中,从短链三烷基膦衍生的半稳定、稳定和功能化叶立德的发展,以合成烯烃,包括二苯乙烯、苯乙烯和 1,3-二烯,以及试剂对于同系化反应,进行了描述。该方法允许以良好的收率轻松获得具有高 (E) 立体选择性的烯烃。这些反应是在水性介质中用弱碱进行的,这使得水溶性氧化膦很容易分离。还描述了用于 Wittig 反应的温和有机催化过程的发展以及在生物条件下制备报道二苯乙烯的延伸。讨论了在制备生物活性天然产物和衍生物方面的应用。