作者:Hongyu Zhang、Shangdong Yang
DOI:10.1007/s11426-015-5382-1
日期:2015.8
In recent years, transition-metal-catalyzed inert C-H bond activation has developed rapidly and is a powerful protocol for the construction of new C-C or C-X bonds and the introduction of new functional groups. Our group has also developed a series of R2(O)P-directed Pd-catalyzed C-H functionalizations involving olefination, hydroxylation, acetoxylation, arylation, and acylation through an uncommon seven-membered cyclo-palladium pretransition state. Unlike previously used directing groups, the R2(O)P group acts as a directing group and is also involved in the construction of P,-hetero-ligands.
近年来,过渡金属催化的惰性C-H键活化发展迅速,是构建新的C-C或C-X键和引入新官能团的有力途径。我们课题组也发展了一系列R2(O)P导向的Pd催化C-H官能化反应,包括烯化、羟基化、醋酸化、芳基化和酰基化,通过一个罕见的七元环钯前过渡态。与先前使用的导向基团不同,R2(O)P基团既作为导向基团又参与构建P,-杂配体。