No abstract

No abstract

The condensation of acetaldehyde and malononitrile is reported to yield 1,1,3,3-tetracyano-2,4-dimethylcyclobutane. The n.m.r. spectrum of this material and several of its derivatives, however, was found to best fit the title compound. A reaction scheme for the formation of the title compound is suggested.

Die Kondensation von Acetaldehyd (I) mit 2 Mol Malodinitril liefert das Tetranitril (III), das nach dem NMR‐Spektrum mit dem Dinitril (IV) in einem Gleichgewicht steht.