Studies with functionally substituted<i>N</i>-alkylazoles: The reactivity of 1-(3,5-dimethylpyrazol-1-yl)-acetone towards electrophilic reagents
作者:Mona Hassan Mohamed、Mohamed Hilmy Elnagdi、Mervat Mohammed Abdel-Khalik
DOI:10.1002/jhet.5570380324
日期:2001.5
The reaction of 1-(3,5-dimethylpyrazol-1-yl)acetone 4 with aromatic diazonium salts afforded the corresponding arylhydrazones 5a,b that were converted into pyridazines 6a,b and 8 via condensation with active methylene nitriles and dimethylformamide dimethylacetal, respectively. Condensation of 4 with phenylhydrazine afforded the phenylhydrazone 10, which could be converted into the indolylpyrazole
1-(3,5-二甲基吡唑-1-基)丙酮4与芳族重氮盐的反应得到相应的芳基azo5a ,b,其分别通过与活性亚甲基腈和二甲基甲酰胺二甲基缩醛缩合而转化为哒嗪6a,b和8 。。的缩合4与苯肼得到苯腙10,其可以被转化成indolylpyrazole 11上治疗乙醇盐酸。化合物4还与亚硝酸苄基-亚甲基丙二腈反应,生成各种取代的新吡唑。