报道了白藜芦醇关键中间体3,5二甲氧基苯甲醛的合成方法。
An improved synthetic method of 3, 5-dimethoxy benzaldehyde which is the key intermediate for synthesizing resveratrol were studied.
苯并二(口恶)茂的合成分二步进行,第一步合成2,2-二甲氧基丙烷,第二步是2,2-二甲氧基丙烷与焦性没食子酸的交换反应。
Two steps lead to the formation of benzodioxoles: firstly, and most importantly the synthesis of 2,2-dimethoxy propane; secondly, the exchanging reaction of 2,2-dimethoxypropane and pyrogallol.
结果分离鉴定了2个二苯酮化合物,其结构分别为2 甲氧基- 3, 4 -亚甲二氧基-二苯酮(I), 4 羟基-2, 6 -二甲氧基-二苯酮(II)。
Results A new benzophenone was isolated and identified as 2-methoxy-3,4-methylenedioxy-benzophenone (I), along with a known compound 4-hydroxy-2,6-dimethoxy-benzophenone (II).
前言:以邻苯二酚和二氯甲烷为原料,二甲亚砜为溶剂,在碱性条件下合成1,2-亚甲二氧基苯,产品收率达到73.4%;
2-(methylenedioxy)benzene is synthesized by using catechol, dichloromethane and dimethylsulfoxide with the condition of alkali and normal pressure. Overall yield of the process is 73.4%.
前言:以邻苯二酚和二氯甲烷为原料,二甲亚砜为溶剂,在碱性条件下合成1,2-亚甲二氧基苯,产品收率达到73.4%;
2-(methylenedioxy)benzene is synthesized by using catechol, dichloromethane and dimethylsulfoxide with the condition of alkali and normal pressure. Overall yield of the process is 73.4%.
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