J. Reisch et S. Dittmann, ACETYLENIC CHEMISTRY .24(1). N-VINYLATION OF N-H ACID HETEROCYCLES, Journal of heterocyclic chemistry, 30(2), 1993, pp. 379-380
The vinylation of 9H-carbazole (1), 1H-indole (3a), and 1H-pyrrolo[2,3
-b]pyridine (3b) with propiolic acid ethyl ester resulting in N-acryli
c esters is reported here.