124557-93-3Relevant academic research and scientific papers
Benzopyrans: Part XXIV-Nitrogen heterocycles fused with or linked to 1-benzopyran from 2-methyl-4-oxo-1-benzopyran-3-carbonitrile and corresponding acid and ester
Ghosh, Chandra Kanta,Pal, Chandana,Maiti, Jharna,Bhattacharyya, Atanu
, p. 448 - 453 (2007/10/02)
The title benzopyran derivatives (1-3.R1= H and Me) give with dimethylformamide dimethyl acetal the enamines (4-6), respectively.The enaminonitrile (4) affords the 1-benzopyranopyridines (10) and (11) when treated with aqueous acid and ammonia, res
