... A new route to pyrazoles via the cyclization of N-allyl-N-nitrosoamides is described. Revue / Journal Title. Heterocycles ISSN 0385-5414 CODEN HTCYAM Source / Source. ... Nitrogen heterocycle. ; Mots-clés français / French Keywords. Nitrosation. ... Nitrosamine. ; Hétérocycle azote ...