Selective defluorination of trifluoromethyl substituents by conformationally induced remote substitution
作者:Mehul H. Jesani、Maria Schwarz、Shiwhu Kim、Finlay L. Evans、Alexander White、Alex Browning、Roman Abrams、Jonathan Clayden
DOI:10.1002/anie.202403477
日期:——
Amide derivatives of trifluoromethyl-substituted benzaldehydes, and their heterocyclic congeners, may be selectively cyclodefluorinated by a remote substitution reaction under mild conditions, giving difluoromethyl-substituted aldehydes after hydrolysis. Selective single and double defluorinations are possible using this method, which provides a versatile route to difluoromethyl arenes.
三氟甲基取代的苯甲醛及其杂环同系物的酰胺衍生物可以在温和条件下通过远程取代反应选择性环脱氟,水解后得到二氟甲基取代的醛。使用该方法可以进行选择性单脱氟和双脱氟,这提供了生产二氟甲基芳烃的通用途径。