Stereospecific Synthesis of Fluoroalkenes by Silver-Mediated Fluorination of Functionalized Alkenylstannanes
作者:Heiko Sommer、Alois Fürstner
DOI:10.1002/chem.201605444
日期:2017.1.12
sorts. Key to success is the use of F‐TEDA‐PF6 in combination with non‐hygroscopic and bench‐stable silver phosphinate (AgOP(O)Ph2) that acts as an essentially neutral, non‐nucleophilic promotor and effective tin‐scavenger at the same time. This new method opens many opportunities for late‐stage fluorination of elaborate compounds far beyond the scope of the literature procedures, as witnessed by the preparation
已知的将链烯基锡烷转化为相应的氟代烯烃的方法的收率变化很大,并且与官能团的相容性有限。最值得注意的是,每当基质中存在质子位点时,原去锡碱化就成为一个严重的问题。本文概述了一种方便的替代方法,其应用程序已大大改进,几乎不受各种游离醇和酰胺的干扰。成功的关键是将F‐TEDA‐PF 6与不吸湿且稳定的次膦酸银(AgOP(O)Ph 2),同时起着中性,非亲核的促进剂和有效的除锡剂的作用。这种新方法为精细化合物的后期氟化开辟了许多机会,远远超出了文献程序的范围,如制备氟化大环内酯类抗生素,氟化前列腺素衍生物以及一组氟化氨基酸替代物和肽等排体所证明的那样。 。