Significant Enhancement in the Efficiency and Selectivity of Iron-Catalyzed Oxidative Cross-Coupling of Phenols by Fluoroalcohols
作者:Eden Gaster、Yulia Vainer、Almog Regev、Sachin Narute、Kavitha Sudheendran、Aviya Werbeloff、Hadas Shalit、Doron Pappo
DOI:10.1002/anie.201409694
日期:2015.3.27
Significant enhancement of both the rate and the chemoselectivity of iron‐catalyzed oxidative coupling of phenols can be achieved in fluorinated solvents, such as 1,1,1,3,3,3‐hexafluoropropan‐2‐ol (HFIP), 2,2,2‐trifluoroethanol (TFE), and 1‐phenyl‐2,2,2‐trifluoroethanol. The generality of this effect was examined for the cross‐coupling of phenols with arenes and polycyclic aromatic hydrocarbons (PAHs)
在氟化溶剂(例如1,1,1,3,3,3-六氟丙烷-2-醇(HFIP),2,2)中,可以显着提高苯酚的铁催化氧化偶联的速率和化学选择性。 ,2-三氟乙醇(TFE)和1-苯基-2-2,2,2-三氟乙醇。考察了苯酚与芳烃和多环芳烃(PAHs)以及苯酚与β-二羰基化合物的交叉偶联的普遍性。新的条件仅在四个合成步骤中就用于合成2'''-dehydroxycalodeninB。