3,4-Dihydroxybenzaldehyde → 3-Amino-2-[(3-hydroxy-4-oxo-1-cyclohexa-2,5-dienylidene)methyl]-3-mercapto-2-propenenitrile

Participants

Reaction Steps

To 0.83 g (6mmol) 3,4-dihydroxybenzaldehyde and 0.7 g (7 mmol) cyanothioacetamide in 30 ml ethanol was added 4 drops of piperidine. The mixture was refluxed for 1 hour, poured into ice water, filtered and dried, giving 0.54 g (41% yield) of an orange solid, m.p. 213° C. Calculated analysis for C10H8N2O2S: C=54.54, H=3.64, N=12.73; found: C=54.44, H=3.87, N=12.91.

Provenance & Evidence