Sodium phenolate and acetophenone can be obtained by adding sodium hydrate into azeotrope.
共沸中加入氢氧
钠,分离出
钠盐和苯
酮。
Sodium phenolate and acetophenone can be obtained by adding sodium hydrate into azeotrope.
共沸中加入氢氧
钠,分离出
钠盐和苯
酮。
The primary synthetic methods of 4-hydroxycoumarin was reviewed starting from phenol, 2-acetylsalicylic acid, methyl salicylate, and o-hydroxyacetophenone respectively.
概述了4-羟基香豆素的合成方法,重点介绍了苯法,
酰水杨酸法,水杨酸甲酯法,邻羟基苯
酮法。
The phenols were O-alkylated with 100% conversion and 100% selectivities using phenacyl bromide and benzyl bromide as alkylating reagents.
用溴代苯酮和溴苄
烷基
试剂,以高
率和100%的转
率以及100%的选择性得到了
的O-烷基
。
Phenoxyacetophenone could be prepared from potassium phenolate and m bromoacetophenone via Ullmann reaction catalyzed by copper acetate in high yields.
间苯氧基苯酮可由
钾与间溴苯
酮在醋酸铜催
下以高
率合成。
P-hydroxyacetophenone combined with methyl chloroacetate can get a new acetonate.This new acetonate combined with another compound-ethanolamine and get a new schiff base.
由对羟基苯酮与氯
酸甲酯反应,得到一种酮,这种酮再与
醇胺反应得到一种新的希夫碱。
Firstly, p-methylacetophenone was obtained in the presence of alchlor as the catalyst, and the optimum condition was 4:1:2 in molar ratio for toluene, acetic anhydride and alchlor with yield of 86.2%.
首先,以甲苯和酸酐
原料,在催
剂三氯
铝存在下合成对甲基苯
酮,并确定甲苯,
酸酐和三氯
铝的最佳摩尔比
4: 1: 2,收率
86.2%。
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