Synthesis of some novel bioactive 4-oxy/thio substituted-1H-pyrazol-5(4H)-ones via efficient cross-Claisen condensation
作者:R. Venkat Ragavan、V. Vijayakumar、N. Suchetha Kumari
DOI:10.1016/j.ejmech.2009.04.010
日期:2009.10
α-Oxy/thio substituted-β-keto esters were synthesized through an efficient cross-Claisen condensation of aryl oxy/thio acetic acid ethyl esters with acid chlorides, then it is converted in situ into 4-oxy/thio substituted-1H-pyrazol-5(4H)-ones by the addition of hydrazine or hydrazine derivatives and screened for their antibacterial, antifungal activities.
α-氧/硫取代的β酮酯是通过一种有效的交叉克莱森缩合合成芳氧/硫代乙酸乙酯与酰氯,然后它被转换原位成-4-氧基/硫基取代的1 ħ -通过添加肼或肼衍生物生成吡唑-5(4 H)-并筛选其抗菌,抗真菌活性。