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General procedure: In a 50 mL flask, a mixture of hydrazine hydrate 1 (1 mmol), beta-keto ester 2 (acetylacetic ether or ethyl benzoylacetate) (1 mmol) was stirred at room temperature (78C) for 5 minutes. And then, 2-hydroxynaphthalene-1,4-dione 3 (1 mmol), isatins 4 (1 mmol), MgCl2 (0.1 mmol) and 5 mL ethanol were added to it. The mixture was stirred at 78C for the appropriate time. After completion of the reaction (monitored by TLC), the reaction mixture was cooled to room temperature, 5 mL water was added to it. Then the precipitated products were filtered and washed with cold ethanol (3 mL×2) to afford the pure products as solid powder in good to excellent yields without further purification.
The potential utility of systematic synthetic strategy will be applicable to efficient generations of chemical libraries of compounds to find ‘hit’ molecules.Read on for other articles about 39603-24-2.
Reference:
Article; Shen, Tianhua; Fu, Zhijie; Che, Fengfeng; Dang, Haibo; Lin, Yan; Song, Qingbao; Tetrahedron Letters; vol. 56; 9; (2015); p. 1072 – 1075;,
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