A GREEN SYNTHESIS OF CAMPHOR - PDF SHARE
The pine oil (turpentine) contains two monoterpenes viz. terpineol and α-pinene. Camphor was extracted from camphor tree, It is used to protect cloths from moths. At present, α-pinene is a raw material for the commercial synthesis of camphor. Some of the other examples such as myrcene, limonene, citronellal, are also monoterpenes.
7. Addition, Sublimation. A Green Synthesis of Camphor
An alternative proposal for the biosynthesis of the bornane series of bicyclic monoterpenes forms the basis of a new synthesis of camphor from p-menth-8-en-2-one (dihydrocarvone).
Synthetically, camphor has been obtained by the dry distillation of the lead1) or calcium-) salts of homocamphoric (Haller's hydroxycamphocarboxylic acid). However, this synthesis was only a partial one, since the homocamphoric acid was obtained from a derivative of camphor. The complete synthesis of camphor was later successfully accomplished by Komppa3) who likewise succeeded in effecting the synthesis of camphoric acid.