Acylation with 1,1,1-trifluoroacetone of the azaallyl carbanion from ethyl bis(methylthio)methyleneaminoacetate
Abstract
Ethyl bis(methylthio)methyleneaminoacetate 1 reacts with 1,1,1-trifluoroacetone in potassium tert-butoxide to afford ethyl 3-methyl-2,4,4-tris(methylthio)-2-(methylthiocarbonylamino)but-3-enoate 2, an unexpected product, whose structure has been determined by X-ray analysis.