Synlett

Microwave-assisted cleavage of aryl methyl ethers with lithium thioethoxide (LiSEt)

J Cvengroš, S Neufeind, A Becker, HG Schmalz

文献索引：Cvengros, Jan; Neufeind, Stefan; Becker, Anne; Schmalz, Hans-Guenther Synlett, 2008 , # 13 p. 1993 - 1998

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被引用次数: 2

摘要

Abstract Lithium thioethoxide (LiSEt), a white solid easily prepared from EtSH and n-BuLi in hexane, was identified as a highly efficient reagent for the cleavage (O-demethylation) of aryl methyl ethers, ie methyl-protected phenols. Of particular synthetic value are applications in the double deprotection of 1, 2-dimethoxyarenes (to give catechols) and in the selective monodeprotection of di-and trimethoxyarenes. The thermal reactions, which are usually ...