Synthesis and Chemical Characterisation of Some New Diheteroaryl Thienothiophene Derivatives

Abstract

Treatment of 1-(5-acetyl-3,4-dimethythieno[2,3-b]thiophene-2yl)ethanone (1) with dimethylformamide dimethyl acetal afforded enaminone derivative 2, which reacted with amino derivatives to give the corresponding bis-pyrimidine, bis-pyrazole, bis-triazolo-pyrimidine and bis-benzoimidazopyrimidine derivatives.

Keywords

• bis-heterocycles
• DMF-DMA
• bis-pyrimidine
• bis-pyrazole
• bis-triazolo pyrimidine