Monoalkyl and symmetrical or unsymmetrical dialkylmalononitriles have been prepared selectively by phase transfer catalysis in the absence of solvent. Exclusive formation of a particular compound is achieved in all cases except for benzylmalononitrile 2f(79%) and prop-2-ynylmalononitrile 2g(62%).
E. Díez-Barra, A. de la Hoz, A. Moreno and P. Sánchez-Verdú, J. Chem. Soc., Perkin Trans. 1, 1991, 2589 DOI: 10.1039/P19910002589
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