Binaphthyl–prolinol chiral ligands: design and their application in enantioselective arylation of aromatic aldehydes†
Chao Yao,Yaoqi Chen,Ruize Sun,Chao Wang,Yue Huang,Lin Li
Organic & Biomolecular Chemistry Pub Date : 03/18/2021 00:00:00 , DOI:10.1039/D1OB00289A
Abstract

Binaphthyl–prolinol ligands were designed and applied in enantioselective arylation of aromatic aldehydes and sequential arylation–lactonization of methyl 2-formylbenzoate. Under optimized conditions, the reactions provided the desired diarylmethanols and 3-aryl phthalides in up to 96% yields with up to 99% ee and up to 89% yields with up to 99% ee, respectively. In particular, essentially optically pure 3-aryl phthalides (over 99% ee) were obtained in large quantities through recrystallization.

Graphical abstract: Binaphthyl–prolinol chiral ligands: design and their application in enantioselective arylation of aromatic aldehydes