NOTES J. Org. Chem., Vol. $6, No. 19, 1971 2903 spectrum was identical with that of material prepared by lithium aluminum hydride reduction of methyl 6-methy1octanoate. a 6- Methyl-1-octanal (4).-To 450 ml of pyridine was slowly added 45 g of chromic acid with stirring and maintdnence of the temperature below 30". The resulting yellow precipitate was treated with 1 1. of hexane and quickly filtered. The solid was washed with hexane and ...