ALS RIECH- UND GESCHMACKSSTOFF VERWENDBARES SPIRANDERIVAT

摘要

1496098 2,6,9,10,10 - Pentamethyl - 1- oxa - spiro(4,5)deca - 3,6 - diene FIRMENICH SA 14 July 1976] 30 July 1975] 29285/76 Heading C2C [Also in Divisions A2 and A5] 2,6,9,10,10 - Pentamethyl - 1 - oxa - spiro- (4,5)deca-3,6-diene having the formula is prepared by treating an acetylenic diol of the formula with a strong mineral or organic acid, e.g. phosphoric or sulphuric acid. The novel compound may be used for improving the organoleptic properties of perfumes or foodstuffs. The acetylenic diol of Formula III may be prepared according to the following reaction scheme