Method of phenylacetic acid production
a technology of phenylacetic acid and production method, which is applied in the direction of carboxylic compound preparation, carboxylic compound preparation, group 1/11 element organic compound, etc., can solve the problems of low yield, low yield, and low yield of non-catalytic methods, and achieve stable yield and reduce the time for phenylsodium
Inactive Publication Date: 2007-01-11
PROPERTY DEV INT LTD
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Benefits of technology
The process achieves a high-yield, high-purity phenylacetic acid production, reducing production time by 50% and addressing the issues of byproduct formation and environmental impact, making it economically viable for industrial use.
Problems solved by technology
Current processes for the production of phenylacetic acid using sodium-toluene, and chlorobenzene as precursors are slow and do not provide a high yield.
Non-catalytic methods are not cost-effective, stable methods for the production of phenylacetic acid because of the long duration of the benzylchloride metaliation, benzylsodium production, and carboxylation stages.
This makes the current processes expensive and time-consuming and therefore unsuited for continuous-process industrial production of phenylacetic acid.
Further, the purity of the product obtained is not high due to the formation of byproducts (phenylmalonic acid, etc.), which requires supplementary purification.
Further, current processes are environmentally unfriendly and are not capable of being carried out in a stainless steel reactor.
Thus, the current processes for the production of phenylacetic acid are not economically expedient and fail to be useful as continuous methods of phenylacetic-acid industrial production.
Method used
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[0018] In the following detailed description of the preferred embodiments, reference is made to the accompanying drawings which form a part hereof, and in which is shown by way of illustration specific preferred embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention, and it is understood that other embodiments may be utilized and that logical chemical and mechanical changes may be made without departing from the spirit or scope of the invention. To avoid detail not necessary to enable those skilled in the art to practice the invention, the description may omit certain information known to those skilled in the art. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is defined only by the appended claims.
[0019] Referring to FIG. 1, there are four basic steps to the inventive phenylacetic acid product...
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Abstract
A process for producing phenylacetic acid is provided. The process includes combining sodium, chlorobenzene, toluene, and a catalyst to form a suspension. This suspension is mixed to form phenylsodium. Upon boiling, the suspension forms benzylsodium. The suspension is then carbonized and acidified to form phenylacetic acid.
Description
BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a process for the production of phenylacetic acid. More specifically, the invention relates to the formation of phenylsodium from a mixture of chlorobenzene, sodium, toluene, and catalyst with further catalytic conversion of phenylsodium to benzylsodium. The invention further relates to a process whereby the benzylsodium is used as a precursor to create phenylacetic acid. [0003] 2. Description of Related Art [0004] Current processes for the production of phenylacetic acid using sodium-toluene, and chlorobenzene as precursors are slow and do not provide a high yield. Non-catalytic methods are not cost-effective, stable methods for the production of phenylacetic acid because of the long duration of the benzylchloride metaliation, benzylsodium production, and carboxylation stages. This makes the current processes expensive and time-consuming and therefore unsuited for continuous-process...
Claims
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IPC IPC(8): C07F1/00C07C51/255
CPCC07C51/255C07C57/32
Inventor SHABANOV, ALIMAMED LATIFRAMAZANOVA, ELMIRA MAMEDEM
Owner PROPERTY DEV INT LTD