1990•Journal für praktische ChemieRequires access

Reaction of Tetracyanoethylene with Arylazoaminopyrazoles via charge‐transfer complexation

Alaa A. Hassan, Yusria R. Ibrahim, Nasr K. Mohamed, Aboul‐Fetouh E. Mourad

Abstract

Abstract Arylazoaminopyrazoles (1a–d) reacts with tetracyanoethylene (TCNE) to yield pyrazolo[1,5‐a]pyrimidines (9) via charge‐transfer (CT) complex formation. The effect of the substituents on the basicity of the pyrazole nucleus as well as the complexation centre in different types of pyrazoles is discussed.

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Available abstract

Key concepts: Tetracyanoethylene, Chemistry, Yield (engineering), Charge (physics), Pyrazole, Photochemistry, Transfer (computing), Medicinal chemistry