The effect of focused microwaves on the reaction of ethyl N-trichloroethylidenecarbamate with pyrazole derivatives
作者:JoséR. Carrillo、Angel Díaz-Ortiz、Antonio de la Hoz、María J. Gómez-Escalonilla、Andrés Moreno、Pilar Prieto
DOI:10.1016/s0040-4020(99)00508-6
日期:1999.7
Under microwave irradiation vinylpyrazoles react with ethyl N-trichloroethylidenecarbamate1 to give the addition to the imine system through the conjugated vinyl group. Likewise, compound 1 react with the NH group of pyrazolylhydrazones, if present. To the best of our knowledge this reaction type has not been described before and only can be performed under microwave irradiation. By classical heating
在微波辐射下,乙烯基吡唑类与N-三氯亚乙基氨基甲酸酯乙酯1反应,通过共轭乙烯基基团加成至亚胺体系。同样,化合物1与吡唑基苯并恶唑的NH基团反应(如果存在)。据我们所知,此反应类型之前没有描述过,只能在微波辐射下进行。通过经典的加热,在没有微波的情况下,在这些反应中仅观察到吡唑衍生物的二聚或分解。