Syntheses of 5-dialkylamino-1,2-oxazoles from N,N-dialkyl-β-amino-α,β,γ,δ-unsaturated thioamides

Article abstract of DOI:10.1007/BF00811850

3-Amino-2,4-pentadienthioamides, which were obtained from 6-dialkylamino-2H-thiopyrane-4(3H)iminium halides by alkali hydrolysis, react with hydroxylamine hydrochloride in a +-addition to give selectively 5-amino-3-alkenyl-1,2-oxazoles.These o