3-Methyl-8-methylidene-2,4,5,7,8,8a-hexahydroazulen-6(1H)-one → 1,4-Dimethyl-6-oxo-perhydroazulene

Participants

Reaction Steps

176 mg of 1-methyl-4-methylen-6-oxo-2,3,3a,4,5,6,7,8-octahydroazulene were hydrogenated in 15 ml of ethanol with 175 mg of palladium-on-carbon (5%). After hydrogen uptake was completed the mixture was filtered off from the catalyst, the filtrate evaporated and distilled in vacuum. There was obtained pure 1,4-dimethyl-6-oxo-perhydroazulene; b.p.0.05 60°; IR(film):νmax = 1700, 1460, 1375, 1335, 1250, 1180, 980, 850 cm-1. The compound has a camphorous, herby, woody odour.

Provenance & Evidence