K. Buttke et Hj. Niclas, A CONVENIENT AND IMPROVED PROCEDURE FOR THE CYANATION OF ENAMINES AND1,3-DICARBONYL COMPOUNDS, Synthetic communications, 24(22), 1994, pp. 3241-3248
The direct cyanation of enamines 2a-f using acylsubstituted cyanatoben
zenes 1a-c and cyanatoanthraquinone 1d furnishes beta-cyanoenamines 3a
-f which upon hydrolysis afford the cyanoketones 4a,b. 2-Cyano-1,3-dik
etones 6a-c are obtained starting from compounds 5a-c and 1.