作者:Evelyn Cuevas Creencia、Masayuki Tsukamoto、Takaaki Horaguchi
DOI:10.1002/jhet.689
日期:2011.9
The Fischer indole synthesis was carried out using microwaves instead of conventional heating procedures. When the mixture of phenylhydrazine, cyclohexanone and zinc chloride was irradiated at 600 W for 3 min, 76% of 1,2,3,4‐tetrahydrocarbazole was obtained. However, when zinc chloride was replaced with p‐toluenesulfonic acid (p‐TSA), the reaction yielded 91% of 1,2,3,4‐tetrahydrocarbazole. Thus, a
费歇尔吲哚合成是使用微波而不是常规加热程序进行的。当苯肼,环己酮和氯化锌的混合物在600 W的温度下照射3分钟时,得到76%的1,2,3,4-四氢咔唑。但是,当氯化锌被对甲苯磺酸(p- TSA)取代时,反应生成了91%的1,2,3,4-四氢咔唑。因此,在p- TSA催化剂存在下,用微波制备了一系列吲哚。J.杂环化学。(2011)。