| 摘要 |
NEW MATERIAL:An optically active or racemic tetralin derivative of the formula (R is H or alkyl). EXAMPLE:( R )-3-( Carboxymethyl )-1,1,4,4,6-pentamethyl-1,2,3,4-tetrahydronaphthalene. USE:Useful as an intermediate raw material for medicines, agricultural chemicals, perfumes, etc. For example, compounds obtained by the decarboxylation, and acetylation are important perfumes, and among them 7-acetyl-1,1,3,4,4,6-hexamethyl-1,2,3,4-tetrahydronaphthalene has a musky odor. PROCESS:An optically active or racemic 4-(2-methylpropenyl)-5,5-dimethyltetrahydro-2-furanone is reacted with benzene or an alkylbenzene in the presence of a Friedel-Crafts catalyst to give the compound of formulaI. |
