A Simple Aliphatic Diamine Auxiliary for Palladium-Catalyzed Arylation of Unactivated <i>β</i>
-C(<i>sp</i>
<sup>3</sup>
)-H Bonds
作者:Jiang Lou、Quannan Wang、Yuan He、Zhengkun Yu
DOI:10.1002/adsc.201801022
日期:2018.12.3
Palladium‐catalyzed β‐C(sp3)‐H arylation of aliphatic acid derivatives was achieved by means of 2‐dimethylaminoethylamine auxiliary as a directing group. The β‐C(sp3)‐H arylation reactions with aryl and heteroaryl iodides efficiently afforded the corresponding arylated hydrocinnamic acid derivatives. Direct β‐C(sp3)‐H alkynylation, and arene C−H arylation and alkynylation were also realized under the
钯催化的β -C(SP 3)- H为通过2-二甲基氨基乙胺辅作为定向基团来实现的脂族酸衍生物的芳基化。的β -C(SP 3与芳基和杂芳基碘化物)-H的芳基化反应有效地得到相应的芳基化的氢化肉桂酸衍生物。在相同或稍加修饰的条件下,也可以实现直接的β- C(sp 3)-H炔基化,芳烃CH芳基化和炔基化。在产品中的脂肪族二胺的辅助可通过甲醇容易地除去在BF的存在3 ⋅OET 2。与广泛使用的双齿含氮指导基团相比,2-二甲基氨基乙胺是一种简单,便宜,易于获得且可移动的,经济的CH-H官能团指导基团。