Zinc-catalyzed Williamson ether synthesis in the absence of base
摘要:
Zinc powder was found to be a highly efficient catalyst for the synthesis of aromatic ethers using microwave heating in the presence of N,N-dimethylformamide as well as under stirring in an oil-bath using tetrahydrofuran as solvent without any inorganic base. This method can be used for selective mono-, di- or tri-O-alkylations. (C) 2004 Elsevier Ltd. All rights reserved.
Arylcyclobutene polymers having improved physical properties, such as elongation, are provided. Compositions and methods for coating such arylcyclobutene polymers are also provided.