N,N’-Bis(trimethylsilyl)-1,4-dihydropyrazines serves as starting materials for introducing alkyl groups into the parent pyrazine skeletons upon combined with aldehydes and nBu4NF as well as electron-deficient alkyl halides. In this reaction, activation of the trimethylsilyl moiety by fluoride is the key step for generating electron-rich silicate intermediates, while reduction of electron-deficient
Base promoted synthesis of 3-benzyl-2,5-diarylpyrazines from arylaldehydes and α-amino ketones
作者:Chao Wang
DOI:10.1080/00397911.2020.1725973
日期:2020.4.2
Abstract A novel approach to 3-benzyl-2,5-diarylpyrazine derivatives from α-amino ketones hydrochloride and arylaldehydes in the presence of Na2CO3 has been developed. In contrast with the classic synthetic methods of pyrazines, this protocol does not need additional oxidants and is more friendly to environment. Graphical Abstract