1586017-56-2Relevant academic research and scientific papers
Reaction of 2-aryl-4-cyano-1,3-oxazole-5-sulfonyl chlorides with 5-amino-1h-pyrazoles and 5-amino-1h-1,2,4-triazole
Kornienko,Pil'O,Kozachenko,Prokopenko,Rusanov,Brovarets
, p. 76 - 86 (2014/05/06)
The reaction of 2-aryl-4-cyano-1,3-oxazole-5-sulfonyl chlorides with 5-amino-3-R-1H-pyrazoles and 5-amino-1H-1,2,4-triazole gave 5-[(3-R-5-amino-1H- pyrazol-1-yl)sulfonyl]-2-aryl-1,3-oxazole-4-carbo- nitriles and 5-[(5-amino-1H-1,2,4-triazol-1-yl)sulfonyl]-2-aryl-1,3-oxazole-4-carbonitriles. The action of sodium hydride on these carbonitriles leads to the elimination of sulfur dioxide and cyclocondensation to give new heterocyclic systems, namely, [1,3]oxazolo[5,4-d]pyrazolo[1,5-a]-pyrimidine and [1,3]oxazolo[5,4-d][1,2,4] triazolo[1,5-a]pyrimidine.
