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聚合物支载三溴的氧化性能研究 总被引:2,自引:0,他引:2
本文利用聚合物支载三溴氧化伯醇及简单醚为酯,苯甲醇为苯甲醛,仲醇为酮,α.一二醇及环醚为内酯。该反应便于操作并有良好的产率。 相似文献
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含3一烷叉基一4,5一二氢一4一羟基一5一甲基一2-(3H)一吠哺酮(简称AHF)结构的天然产物广泛存在于律科植物中[‘j,该类化合物往往具有高细胞毒性和抗肿瘤等生物活性[’-’1.Litseno-lideC是1972年Ishii等[‘j首次从樟科植物中分离得到的一种AHF,其结构为3一十四烷叉基一4,5一二氢一个羟基一5一甲基一2-(3H)一块哺酮,根据其烷又基构型不同又可分为:(3Z,4a,sp)-LitsenolideC;和(3E,4a,sg)-LitsenolideC。(1).目前大多数合成LitsenolideC的方法立体选择性较差[’-’j,反应产物多为两种异构体的混… 相似文献
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The synthesis of N-substituted p-hydroxybenzoic amides using a liquid phase approach is described. Poly(ethylene glycol)(PEG) and p-hydroxybenzoic acid were linked by oxalyl chloride to give compound 1, which was chlorinated by thionyl chloride, followed by amidation with NHR^1R^2 to yield compound 3. Hydrolysis of compound 3 gave the title amide 4.These crude library members were obtained in good yields with high purities. 相似文献
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