Login / Signup

Palladium-Catalyzed Enantioselective Directed C(sp 3 )-H Functionalization Using C 5 -Substituted 8-Aminoquinoline Auxiliaries.

Yi HuangXiaoyan LvHua-Rong TongWenji HeZiqian BaiHao WangGang HeGong Chen
Published in: Organic letters (2023)
8-Aminoquinoline (AQ) has proven to be a highly effective bidentate directing group for palladium-catalyzed C-H functionalization reactions. However, enantiocontrol of AQ-directed C(sp 3 )-H functionalization reactions has been challenging. Herein, a new protocol is presented for the Pd-catalyzed enantioselective arylation of unactivated β C(sp 3 )-H bonds of alkyl carboxamides with aryl iodides using a C 5 -iodinated 8-aminoquinolines (IQ) auxiliary in conjugation with a BINOL ligand. Additionally, a C 5 -aryl substituted 8-aminoquinoline auxiliary can facilitate enantioselective alkenylation and alkynylation of benzylic C(sp 3 )-H bonds of 3-arylpropanamides with the corresponding bromide reagents under similar conditions.
Keyphrases
  • molecular docking
  • randomized controlled trial
  • ionic liquid
  • room temperature