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