Nucleophilic Interception of the γ,δ-Acetylenic α,β-Olefinic Aldehyde Intermediate Formed from Furil Monotosylhydrazone

Article abstract of DOI:10.1021/jo00118a012

The reaction of furil monotosylhydrazone (1) with nucleophiles uder basic conditions led to the formation of 5-(2-furoylmethylene)-2-pyrrolidinones 3 when amines and hydrazine hydrate were used.Treatment with methylhydrazine led to production of 1-methyl-