Reaction of 4-tert-butylcatechol and its derivatives with methoxy(pyridine)copper(II) chloride in the absence of oxygen. A new structure reminiscent of those resulting from "extradiol" oxidations of catechols in the presence of oxygen
作者:Timothy R. Demmin、Milorad M. Rogic
DOI:10.1021/jo01309a028
日期:1980.10
Enantioselective Organocatalytic Aryloxylation of β-Keto Esters
An efficient enantioselective aryloxylation of cyclic β-ketoesters with a selection of substituted o-quinones catalyzed by a bifunctional cinchona alkaloid derivative, giving entry to tricyclic dioxin adducts with high enantio- and diastereoselectivity, is described. aryloxylation - quinones - β-ketoester - organocatalysis - dioxins