Sodium phenolate and acetophenone can be obtained by adding sodium hydrate into azeotrope.
共沸物中加入氢氧
钠,分离出酚钠盐和
乙酮。
Sodium phenolate and acetophenone can be obtained by adding sodium hydrate into azeotrope.
共沸物中加入氢氧
钠,分离出酚钠盐和
乙酮。
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-
香豆素的合成方法,重点介绍了
酚法,乙酰水杨酸法,水杨酸甲酯法,邻

乙酮法。
The phenols were O-alkylated with 100% conversion and 100% selectivities using phenacyl bromide and benzyl bromide as alkylating reagents.
用溴代
乙酮和溴苄
烷
试剂,
高产
和100%的转

及100%的选择性得到了酚的O-烷
产物。
Phenoxyacetophenone could be prepared from potassium phenolate and m bromoacetophenone via Ullmann reaction catalyzed by copper acetate in high yields.
间
氧
乙酮可由酚钾与间溴
乙酮在醋酸铜催
下
高产
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

乙酮与氯乙酸甲酯反应,得到一种酮,这种酮再与乙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,
甲
和乙酸酐
原料,在催
剂三氯
铝存在下合成对甲
乙酮,并确定甲
,乙酸酐和三氯
铝的最佳摩尔比
4: 1: 2,收
86.2%。
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