4(3)-(4-하이드록시-4-메틸펜틸)-3-사이클로헥센-1-카복시알데히드

Lyral is a colorless, viscous liquid with a sweet odor reminiscent of lily of the valley. The aldehyde can be prepared by a Diels–Alder reaction of myrcenol and acrolein in the presence of a Lewis catalyst (e.g., zinc chloride). Reaction ofmyrcenol with acrolein at elevated temperatures, without a catalyst, yields a 70 : 30 mixture of the 4- and 3-substituted cyclohexene carboxaldehydes .This mixture is a commercial product. The title compound has excellent fixative properties and is used especially in soap and cosmetics perfumery：