Catalyst-free one-pot synthesis of 1,4,5-trisubstituted pyrazoles in 2,2,2-trifluoroethanol
作者:Heshmatollah Alinezhad、Mahmood Tajbakhsh、Mahboobeh Zare
DOI:10.1016/j.jfluchem.2011.07.014
日期:2011.11
A simple, efficient and three component one-pot synthesis of 1,4,5-trisubstituted pyrazoles by condensation of β-dicarbonyls, N,N-dimethylformamide dimethyl acetal (DMFDMA) and hydrazine derivatives in 2,2,2-trifluoroethanol without using any catalyst and activation, is described.
通过在不使用2,2,2-三氟乙醇的条件下将β-二羰基,N,N-二甲基甲酰胺二甲基乙缩醛(DMFDMA)和肼衍生物缩合的简单,有效的三组分一锅法合成1,4,5-三取代的吡唑描述了任何催化剂和活化。