abstract |
Process for preparing lower alkyl esters of 2, 6, 6-trimethyl 1 - carboxy - 2, 4 - cyclohexadiene comprises reacting an allyl quaternary phosphonium salt with a lower alkyl alpha isopropylidene acetoacetate in the presence of a strong base. These esters are useful in synthesis of unsaturated alicyclic ketones for application as perfuming and flavoring agents. |