Chemistry · Organic Synthesis
A monoterpenoid well known for its analgesic properties and responsible for a cooling sensation on the skin is produced commercially by asymmetric synthesis. The process forms an allylic amine from myrcene, undergoes asymmetric isomerization with a Rhodium complex to give R-citronellal, cyclizes via a ZnBr2-initiated carbonyl-ene reaction to isopulegol, and is finally hydrogenated. This terpenoid is:
- 1Limonene
- 2Citral
- 3Menthol✓
- 4Camphor
Correct answer
Menthol
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