5-ARYL-2-FURANCARBALDEHYDE HYDRAZONES AND RELATED COMPOUND

A series of 5-aryl-2-furancarbaldehyde 2,6-dialkylphenylhydrazones (Ia - Iv) and dimethylhydrazones (IIa - IIf) as well as related compound benzo[b]furan-2-carbaldehyde dimethylhydrazone (III) were prepared. Co mpounds Ia - Iv were synthesized by condensing 5-aryl-2-furancarbaldeh ydes with 2,6-dialkylphenylhydrazines, compounds IIa - IIf were obtain ed from the same starting compounds and N,N-dimethylhydrazine. The int ermediate 5-aryl-2-furancarbaldehydes were prepared by reaction of ary ldiazonium chlorides with 2-furancarbaldehyde. The structure of the co mpounds were proven by H-1, C-13 and N-15 NMR spectra.