Studies with enaminones: synthesis of new coumarin-3-yl azoles, coumarin-3-yl azines, coumarin-3-yl azoloazines, coumarin-3-yl pyrone and coumarin-2-yl benzo[<i>b</i>]Furans
作者:Fathy Mohamed Abel Aziz El-Taweel、Mohamed Hilmy Elnagdi
DOI:10.1002/jhet.5570380428
日期:2001.7
dithiocarboxylic acid to yield pyranones. The reaction of the enaminone with 3-amino-1H-1,2,4-triazole gives the triazolo[3,4-b]pyrimidine. The enaminone underwent self dimerization on reflux in acetic acid ammonium acetate to yield the coumarinyl pyridines and reacted with ketone under the same conditions to yield the pyridine. The reaction of the enaminone with 1,4-benzoquinone and 1,4-naphthoquinone gives
将3-乙酰基香豆素与二甲基甲酰胺二甲基乙缩醛(DMFDMA)缩合,得到烯胺酮,烯胺酮与羟胺和肼容易反应,分别生成香豆素-3-基异恶唑和香豆素-3-基吡唑。烯胺与盐酸苄nz和3-氨基-1,2,4-1 H-三唑的反应得到嘧啶和三唑并[3,4- b ]嘧啶。烯胺与马尿酸和二硫代羧酸反应生成吡喃酮。烯胺酮与3-氨基-1 H -1,2,4-三唑的反应生成三唑并[3,4- b]嘧啶。烯胺在乙酸乙酸铵上回流后进行自二聚,得到香豆素基吡啶,并在相同条件下与酮反应得到吡啶。烯胺酮与1,4-苯醌和1,4-萘醌的反应得到苯并呋喃香豆碱衍生物。