An efficient and expeditious synthesis of functionalized trifluoromethyl ketones through lithium-iodine exchange reaction
作者:Isabel Villuendas、Alfredo Parrilla、Angel Guerrero
DOI:10.1016/s0040-4020(01)89400-x
日期:1994.1
long-chain triflouromethyl ketones achieved by metallation of the corresponding iodides in the presence of an equimolar amount of tert-butyllithium, followed by reaction with a fluoroacylating agent. Metallation occurs quantitatively at −78°C and, in contrast to what has been generally recommended, there is no need to add the second equivalent of base, since its presence may be detrimental if other electrophilic
通过在等摩尔量的叔丁基锂存在下将相应的碘化物金属化,然后与氟代酰化剂反应,可以实现长链三氟甲基酮的直接高效合成。金属化在-78°C下定量发生,与通常所建议的相反,不需要添加第二当量的碱,因为如果分子中存在其他亲电子功能,则其存在可能是有害的。