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ChemicalBook CAS DataBase List Dibenzoyl-L-tartaric acid
2743-38-6

Dibenzoyl-L-tartaric acid synthesis

5synthesis methods
A synthetic method of Dibenzoyl-L-tartaric acid includes the following steps: with L-tartaric acid and benzoyl chloride as raw materials, copper sulfate as a catalyst and toluene as a solvent, carrying out reaction to prepare L-dibenzoyl tartaric anhydride, carrying out hydrolysis with an equal amount of water and toluene to obtain the L-dibenzoyl tartaric acid, wherein the toluene serving as the solvent, as well as the water and the toluene in the hydrolysis step, can be repeatedly utilized.
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Yield:2743-38-6 97.2%

Reaction Conditions:

with copper(II) sulfate in toluene for 4 h;Autoclave;Large scale;Reagent/catalyst;

Steps:

5
To the 3000 L autoclave, 450 kg of T-tartaric acid and 600 L of toluene were added. 2 kg of copper sulfate was added with stirring. 880 kg of benzoyl chloride was added dropwise and the reaction was continued for 4 hours. The reaction was continued for 4 hours, Dibenzoyl tartaric acid anhydride 1211.7kg, put it into 5000L reactor, add water and toluene 1211.7kg, heated to reflux, keep 3 hours, cooling to room temperature discharge, rejection of L-dibenzoyl tartaric acid 1059.8kg.The L-dibenzoyl tartaric acid obtained in this example was subjected to TEM test. The test structure was shown in Fig. 5, and it was found that the purity of the product L-dibenzoyl tartaric acid was 99.09% and the total yield was 97.2%.

References:

PUYANG TIANJIAN BIOTECHNOLOGY CO., LTD;CHU, JINGBO;LIU, HANG;CUI, FEI;LI, ZHIJUN;CUI, QINGHAI;ZHANG, DAOWEI;LI, YAMIN;WANG, JIANXUN;LI, RONG;FAN, WEIBIN;ZHENG, JISHUAN;YUAN, GUOLONG;WEN, JIAOGANG;ZHANG, JIANMIN CN104496806, 2016, B Location in patent:Paragraph 0099-0102

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