Scalable Cu(II)-mediated intramolecular dehydrogenative phenol-phenol coupling: Concise synthesis of enantiopure axially chiral homo- and hetero-diphenols
作者:Yuefei Gu、Tianyang Wang、Ming Gao、Zhu-Jun Yao
DOI:10.1016/j.cclet.2020.02.015
日期:2021.1
hetero-coupling of phenols has been successfully developed for quick preparation of enantiopure axial diphenols under mild Cu(II)-mediated conditions, using ((4S,5S)-2,2-dimethyl-1,3-dioxolane-4,5-diyl)dimethanol as the chiral auxiliary. The commercially available (R)-α-methylbenzylamine was identified as the best amine ligand for Cu(II) in the reactions. A variety of homo/hetero bis-dihydroxylbenzoate