Diaminomethylidene derivatives of β-oxo sulfones as potential reagents in heterocyclic synthesis and chelating ligands
作者:V. A. Voronkova、S. V. Baranin、M. A. Prezent、L. S. Vasil’ev、V. A. Dorokhov
DOI:10.1007/s11172-010-0337-3
日期:2010.10
the reaction products under the action of MeONa in MeOH gives N,N′-unsubstituted diaminomethylidene derivatives of β-oxo sulfones (acyl(R-sulfonyl)ketene aminals), which can be used as reagents for heterocyclic synthesis and as chelating ligands. The syntheses of 2-amino-3-arylsulfonylpyridin-4(1H)-ones and 5-sulfonylcytosine derivatives are presented as examples.
在催化量的 Ni(acac)2 存在下,活性亚甲基 β-氧代砜加成到苯甲酰氰胺的 C≡N 键上。在 MeOH 中 MeONa 作用下,反应产物脱苯甲酰化得到 N,N'-未取代的 β-氧代砜(酰基(R-磺酰基)烯酮缩醛胺)的二氨基亚甲基衍生物,可用作杂环合成试剂和螯合配体. 2-amino-3-arylsulfonylpyridin-4(1H)-ones 和 5-sulfonylcytosine 衍生物的合成作为例子呈现。