Method for preparing borneol from bornyl oxalate

Abstract

The invention discloses a method for preparing borneol from borneol oxalate. After sending borneol oxalate, catalyst and liquid alkali into a tubular reactor for saponification reaction, the catalyst is recovered, the crude borneol is washed with water, and the solvent is recovered. , dissolve and crystallize, and dry to obtain high-purity borneol. Through the above method, the present invention can solve the problems of long saponification reaction time, large energy consumption, low yield, uncompact production process, high labor intensity, etc., and adopts a new crystallization device to shorten the crystallization cycle and improve production efficiency; The new environment-friendly solvent makes the production non-polluting, environment-friendly, safe, improves the yield of the product, reduces the generation of impurities, makes the product quality stable, and the borneol content reaches more than 65%.

Description

technical field [0001] The invention relates to the technical field of chemistry and chemical engineering, in particular to a method for preparing borneol from bornyl oxalate. Background technique [0002] Borneo (1,7,72 trimethylbicyclo[2,2,1]heptane 222 alcohol), also known as borneol, functions include: resuscitating the mind, clearing away heat and relieving pain, and mainly treating febrile diseases, coma, convulsions, and stroke phlegm , convulsions, epilepsy, phlegm confusion, sore throat and toothache, aphthous carbuncle, red eyes and other diseases. Borneol has many functions in Chinese patent medicine preparations, such as improving the bioavailability of other active ingredients in the preparation, promoting the transdermal effect, restoring blood flow in the myocardial infarction area, slowing down the heart rate, reducing myocardial oxygen consumption, and stimulating the central nervous system by borneol. It has a strong two-way regulating effect, which is not...

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Problems solved by technology

[0011] In order to overcome the deficiencies in the prior art, the present invention provides a method for preparing borneol from borneol oxalate, which overcomes the problems of long saponification reaction time, large energy consumption, low yield, uncompact production process and high labor intensity in the old process , which adopts a new crystallization device, which can shorten the crystallization cycle and improve production efficiency; use a new type of environmentally friendly solvent to make the production non-polluting, environmentally friendly, and safe, increase the yield of the product, reduce the generation of impurities, and make the product Stable quality, borneol content reaches more than 65%

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