Utilizing Carbonyl Coordination of Native Amides for Palladium‐Catalyzed C(sp
<sup>3</sup>
)−H Olefination
作者:Hojoon Park、Yang Li、Jin‐Quan Yu
DOI:10.1002/anie.201906075
日期:2019.8.12
PdII‐catalyzed C(sp3)−H olefination of weakly coordinating native amides is reported. Three major drawbacks of previous C(sp3)−H olefination protocols, 1) in situ cyclization of products, 2) incompatibility with α‐H‐containing substrates, and 3) installation of exogenous directing groups, are addressed by harnessing the carbonyl coordination ability of amides to direct C(sp3)−H activation. The method
据报道,Pd II催化弱配位天然酰胺的 C(sp 3 )−H 烯化反应。以前的C(sp 3 )−H烯化方案的三个主要缺点,1)产物的原位环化,2)与含α-H的底物不相容,3)外源导向基团的安装,通过利用羰基配位来解决酰胺引导 C(sp 3 )−H 激活的能力。该方法首次能够对多种天然酰胺底物(包括仲酰胺、叔酰胺和环酰胺)进行直接 C(sp 3 )−H 官能化。该方法的实用性通过烯烃化产物的多种转化得到证明。