Synthesis of thieno[2,3-h][1,6]naphthyridine from 2-(3-cyanopropylthio)pyridine-3-carbonitrile: formation of a novel ring system
Abstract
An efficient methodology for the synthesis of novel ring system, thieno[2,3-h][1,6]naphthyridine, via a Smiles type rearrangement reaction and cyclization is described, its structure is confirmed by an X-ray structure analysis.