Straightforward Access to Pyrazine‐(2,3)‐diones through Sequential Three‐Component Reaction
作者:Giacomo Mari、Lucia De Crescentini、Gianfranco Favi、Stefania Santeusanio、Fabio Mantellini
DOI:10.1002/ejoc.202201080
日期:2023.2.6
A protocol for the assembly of polysubstituted 2,3-dioxo-1,4,5,6-tetrahydropyrazines and 2,3-dioxo-hydro-1H-cycloalkyl[b]pyrazines by the sequential reaction of primary aliphatic amines, 1,2-diaza-1,3-dienes and oxalyl chloride is reported. This approach represents an easy transformation of readily available precursors into target-relevant products difficult to obtain with alternative methods.
多取代 2,3-dioxo-1,4,5,6-tetrahydropyrazines 和 2,3-dioxo-hydro-1 H -cycloalkyl[ b ]pyrazines 通过初级脂肪胺的顺序反应组装的协议,1,报道了 2-二氮杂-1,3-二烯和草酰氯。这种方法代表了一种容易将现成的前体转化为目标相关产品难以用替代方法获得的方法。