P-Terpineol

Synthetic pine oil is produced by the acid-catalyzed hydration of a-pinene (Fig. 1). Mineral acids, usually phosphoric acid, are used in concentrations of 20—40 wt % and at temperatures varying from 30—100°C. Depending on the conditions used, alcohols, chiefly a-terpineol (9), are produced along with /)-menthadienes and cineoles, mainly limonene, terpinolene, and 1,4- and 1,8-cineole (46—48). Various grades of pine oil can be produced by fractionation of the cmde products. Formation of terpin hydrate (10) from a-terpineol gives P-terpineol (11) and y-terpineol (12) as a consequence of the reversible... 

Principal terpene alcohol components of pine oils are a-terpineol, y-terpineol, p-terpineol, a-fenchol, bomeol, terpinen-l-ol, and terpinen-4-ol. The ethers, 1,4- and 1,8-cineole, are also formed by cydization of the y>-menthane-1,4- and 1,8-diols. The bicydic alcohols, a-fenchol [512-13-0] (61) and bomeol (62), are also formed by the Wagner-Meerwein rearrangement of the pinanyl carbonium ion and subsequent hydration. Bomeol is t / i7< -l,7,7-trimethylbicydo[2.2.1]heptan-2-ol [507-70-0]. Many other components of pine oils are also found, depending on the source of the turpentine used and the method of production. 

Limonene is the major monoterpene in orange oil. This is a colorless and odorless compound at high purity. However, it rapidly oxidizes to carveol and carvone in the presence of air. Under acidic conditions, a-terpineol, P-terpineol, and y-terpineol are also produced. Many of the impurities present in limonene have much higher odor potencies. These odor potent compounds can be perceived as limonene odor . 

Terpineol is mainly isolated from plants of the Eucalyptus species and is a mixture of a-terpineol, P-terpineol, 4-terpineol, and 1,4- and 1,8-terpindiols. Both enantiomers of a-terpineol are commercially produced through hydration of a-pinenes.37... 

The steam-distilled oil derived from the galls of Pistacia integerrima was analyzed by chromatography and spectral techniques. The oil was found to be rich in a-pinene (13) (21.8%), P-pinene (14) (16.2%), a-phellandrene (15) (15.5%), and A3-carene (16) (11.1%). The other main constituents characterized were P-phellandrene (17), y-terpinene (18), a-terpineol (19), and P-terpineol (20) as well as a-ocimene (21) and P-ocimene (22). This steam-distilled oil was shown to possess CNS-depressant activity [75]. 

Spectrum Quality Prods. http //www.spectrumchemical.com T R Chem. Toyotama Perfumery P-Terpineol CAS 138-87-4 FEMA 3564... 

Rhodinyl propionate Safrol Salicylaldehyde Santalol Santalyl acetate Santalyl phenylacetate Skatole Sorbitan stearate Styrene Sucrose octaacetate a-Terpinene y-Terpinene a-Terpineol Terpineol anhyd. P-Terpineol Terpinolene Terpinyl acetate Terpinyl anthranilate Terpinyl butyrate Terpinyl cinnamate... 

Yomogi alcohol, aitemlsia alcohol, davanone, lyratol + lyratyl acetate, chrysanthenol, carveol, carvone, dihydrocarvone, terpinene-4-ol, y-campholenol, myrtenol, p terpineol, 4-thujene-2-a-yl-acetate, carveyl acetate, fkcubebene, juniper camphor, thymol, P-terpenyl acetate, linalool Sabinene, germacrene D... 

Polyoxyethylated tri-methylolpropane triacrylate Monohydroxy polycaproUactone monoacrylate, Mw 458 P-Terpineol (l-methyl-l-(4-methyl-4-hydroxycyclohexyl)ethane... 

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