This document does not have an outline. ... JavaScript is disabled on your browser. Please enable JavaScript to use all the features on this page. ... Reaction of 2-arylazo-2, 5-dimethyl-3(2H)-furanones with ammonia. Preparation of β-acetyl-β-(3-amino-2-butenoyl) arylhydrazines. ... Author links open the overlay panel. Numbers correspond to the affiliation list which can be exposed by using the show more link. ... Ring opening of 2-arylazo-2,5-dimethyl-3(2H)-furanones (1a–d) ...