Diverse <i>meta</i>
-C−H Functionalization of Arenes across Different Linker Lengths
作者:Ramasamy Jayarajan、Jayabrata Das、Sukdev Bag、Rajdip Chowdhury、Debabrata Maiti
DOI:10.1002/anie.201804043
日期:2018.6.25
Arenes containing conformationally flexible long alkyl chains have been successfully functionalized at the meta‐position. Good to excellent meta selectivity is achieved for systems with up to 20 atoms between the target C−H bond and the coordinating heteroatom of the directing group. The palladium‐catalyzed functionalization reactions include alkylation, cyanation, olefination, and acetoxylation. The
含有构象柔性长烷基链的芳烃已在间位成功被官能化。 对于在目标C H键与导向基团的配位杂原子之间最多具有20个原子的系统,可以实现良好至优异的间位选择性。钯催化的官能化反应包括烷基化,氰化,烯化和乙酰氧基化。该元 选择性专靠灵活的基于嘧啶的支架设计约束。