Sodium phenolate and acetophenone can be obtained by adding sodium hydrate into azeotrope.
共加入氢氧化钠,分离出
钠盐和苯
。
Sodium phenolate and acetophenone can be obtained by adding sodium hydrate into azeotrope.
共加入氢氧化钠,分离出
钠盐和苯
。
Phenoxyacetophenone could be prepared from potassium phenolate and m bromoacetophenone via Ullmann reaction catalyzed by copper acetate in high yields.
间苯氧基苯可由
钾
间溴苯
在醋酸铜催化下以高产率合成。
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
法。
The phenols were O-alkylated with 100% conversion and 100% selectivities using phenacyl bromide and benzyl bromide as alkylating reagents.
用溴代苯和溴苄为烷基化试剂,以高产率和100%的转化率以及100%的选择性得到了
的O-烷基化产
。
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.
由对羟基苯氯
酸甲酯反应,得到一种
,这种
再
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,以甲苯和酸酐为原料,在催化剂三氯化铝存在下合成对甲基苯
,并确定甲苯,
酸酐和三氯化铝的最佳摩尔比为4: 1: 2,收率为86.2%。
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