Synthesis of 5-alkyl-1,3,5-triazinan-2-ones and 5-alkyl-1,3,5-triazinane-2-thiones using Cu- and Sm-containing catalysts
摘要:
Efficient procedures have been developed for the synthesis of 5-alkyl-1,3,5-triazinan-2-ones and 5-alkyl-1,3,5-triazinane-2-thiones by reaction of urea (thiourea) with primary alkylamines and N,N,N',N'-tetramethylmethylenediamine and by reaction of primary amines with N,N'-bis(dimethylaminomethyl)urea(thiourea) in the presence of Cu- and Sm-containing catalysts.
Straightforward Three-Component Synthesis of N′,N′′-Disubstituted N-Alkyl-1,3,5-Triazinanes
作者:Alexey V. Kletskov、Antonio Frontera、Anna A. Sinelshchikova、Mikhail S. Grigoriev、Vladimir P. Zaytsev、Mariya V. Grudova、Alexander S. Bunev、Sofia Presnukhina、Anton Shetnev、Fedor I. Zubkov
DOI:10.1055/s-0039-1690900
日期:2020.7
Efficient approaches towards the synthesis of various N-substituted 1,3,5-triazinanes based on a transformation of N-alkyl-1,5,3-dioxazepanes or on a dominoreaction involving condensation of various amines, amides, and paraformaldehyde are described for the first time. Mg(ClO4)2 was shown to be one of the most potent additives for the condensation. The proposed approaches permit the synthesis of a