4-(Azidomethyl)pyrazole-3-carboxylic acid ethyl esters react with cyanoacetamides in THF solution in the presence of t-BuOK resulting in the formation of 5-oxo-4,5,7,9-tetrahydropyrazolo[3,4-e][1,2,3]-triazolo[1,5-a][1,3 ...