A New Route for the Synthesis of 3-Methoxythiophenes
摘要:
A new synthesis of 4-substituted, 5-substituted and 4,5-disubstituted 3-methoxythiophenes is reported. The reaction takes place in three steps in nealy quantitative yields starting from methyl 3-hydroxythiophene-2-carboxylates.
Mild and General Palladium-Catalyzed Synthesis of Methyl Aryl Ethers Enabled by the Use of a Palladacycle Precatalyst
作者:Chi Wai Cheung、Stephen L. Buchwald
DOI:10.1021/ol401796v
日期:2013.8.2
A general method for the Pd-catalyzed coupling of methanol with (hetero)aryl halides is described. The reactions proceed under mildconditions with a wide range of aryl and heteroaryl halides to give methyl aryl ethers in high yield.