作者:Ani H. Hasratyan、Ashkharuhi G. Alexanyan、Hasmik N. Khachatryan、Geghetsik B. Zakaryan、Sargis S. Hayotsyan、Gevorg G. Danagulyan、Hovhannes S. Attaryan
DOI:10.1007/s10593-018-2342-7
日期:2018.7
It is shown that alkylation of pyrazoles with (E)/(Z)-1,3-dichlorobut-2-enes can be carried out in an alkaline aqueous medium in the presence of N-methylmorpholine N-oxide. In some cases, this technique may substitute phase-transfer catalysis. Conformational analysis of the reaction products showed that a mixture of (E)/(Z) isomers is formed in a ratio of 9:1.
结果表明,吡咯类与(E)/(Z)-1,3-二氯丁-2-烯的烷基化反应可以在碱性水介质中,在N-甲基吗啉N-氧化物存在下进行。在某些情况下,该技术可以替代相转移催化。反应产物的构象分析表明,(E)/(Z)异构体的混合物以9∶1的比例形成。