Pd(II)-catalyzed Enantioselective Beta-Methylene C(sp3)–H Bond Activation
申请人:The Scripps Research Institute
公开号:US20190315710A1
公开(公告)日:2019-10-17
Chiral acetyl-protected aminoethyl quinoline (APAQ), pyridine and imazoline ligands are disclosed that enable Pd (II)-catalyzed enantioselective arylation or heteroarylation of ubiquitous prochiral β-methylene C—H bonds of aliphatic amides offers an alternative disconnection for constructing β-chiral centers. Systematic tuning of the ligand structure reveals that a six-membered instead of a five-membered chelation of these types of ligands with the Pd(II) is important for accelerating the C(sp
3
)-H activation thereby achieving enantioselectivity for quinoline and pyridine ligands.
Pd(II)-catalyzed enantioselective β-methylene C(sp3)—H bond activation
申请人:The Scripps Research Institute
公开号:US11186563B2
公开(公告)日:2021-11-30
Chiral acetyl-protected aminoethyl quinoline (APAQ), pyridine and imazoline ligands are disclosed that enable Pd (II)-catalyzed enantioselective arylation or heteroarylation of ubiquitous prochiral β-methylene C—H bonds of aliphatic amides offers an alternative disconnection for constructing β-chiral centers. Systematic tuning of the ligand structure reveals that a six-membered instead of a five-membered chelation of these types of ligands with the Pd(II) is important for accelerating the C(sp3)-H activation thereby achieving enantioselectivity for quinoline and pyridine ligands.