Studies With Functionally Substituted Heteroaromatics: A Novel Route for the Synthesis of 1-Aryl-6-oxopyridazinones, 1-Arylpyridazine-6-imines and 1-Aryl-6-imino-4-pyridazinals
作者:Fatima Al-Omran、Mervat Mohammed Abdel Khalik、Adel Abou-Elkhair、Mohammed Hilmy Elnagdi
DOI:10.1055/s-1997-1512
日期:1997.1
Aryldiazonium salts couple with the 3-dimethylamino-1-substituted enones 1 a-c to yield 2-arylhydrazono-3-oxo-3-substituted-propanals which are excellent precursors for the synthesis of pyridazinones. The coupling reaction of 2-cyano-5-dimethylamino-3-substituted-penta-2,4-dienonitrile 12 a-b with benzene diazonium salts in ethanolic sodium hydroxide gives the pyridazinals 13 a, b.
Aryldiazonium 盐与3-二甲基氨基-1-取代烯酮 1 a-c 反应,生成2-芳基肼佐-3-氧代-3-取代丙醛,这些化合物是合成吡嗪酮的优秀前体。2-氰基-5-二甲基氨基-3-取代戊-2,4-二烯腈 12 a-b 与苯二氮盐在乙醇钠氢氧化物中反应,生成吡嗪醛 13 a, b。