GB468785A - Improvements in or relating to the production of terpineol from pinene - Google Patents
Improvements in or relating to the production of terpineol from pineneInfo
- Publication number
- GB468785A GB468785A GB34263/35A GB3426335A GB468785A GB 468785 A GB468785 A GB 468785A GB 34263/35 A GB34263/35 A GB 34263/35A GB 3426335 A GB3426335 A GB 3426335A GB 468785 A GB468785 A GB 468785A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pinene
- weight
- per cent
- terpineol
- mixture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C35/00—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a ring other than a six-membered aromatic ring
- C07C35/02—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a ring other than a six-membered aromatic ring monocyclic
- C07C35/08—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a ring other than a six-membered aromatic ring monocyclic containing a six-membered rings
- C07C35/12—Menthol
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Terpineol is prepared from pinene direct, by treating the pinene with a mixture of formic and ortho-phosphoric acids, each of a concentration of 60--75 per cent by weight, the amount of p phosphoric acid in the mixture comprising 20--40 per cent by weight of the formic acid present. The phosphoric acid is stated to catalyse the reaction between the pinene and formic acid and to hydrolyze the resulting terpinyl formate. The pinene may be treated alone or in a solvent, at a temperature below 50 DEG C. and preferably 35 DEG C. On completion of the reaction, the acids are allowed to separate in a layer and drained off for re-use, whilst the oily layer is subjected first to treatment with a little caustic soda to saponify any terpinyl formate present and then to fractional distillation. Examples are given of the treatment of pinene alone, of turpentine containing pinene, and of pinene dissolved in other terpenes, using mixtures of 70 per cent by weight formic acid and 70 per cent by weight phosphoric acid in appropriate proportions; the products comprise a mixture of a - and b -terpineol, the a -compound predominating.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US468785XA | 1935-01-09 | 1935-01-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB468785A true GB468785A (en) | 1937-07-12 |
Family
ID=21945887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34263/35A Expired GB468785A (en) | 1935-01-09 | 1935-12-10 | Improvements in or relating to the production of terpineol from pinene |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB468785A (en) |
-
1935
- 1935-12-10 GB GB34263/35A patent/GB468785A/en not_active Expired
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