52392-55-9Relevant academic research and scientific papers
Preparation method of low-melting-point mixture of diesters of terephthalic acid
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Paragraph 0062; 0063; 0064; 0074, (2016/11/24)
The invention relates to a preparation method of terephthalate n-butyl.isobutyl ester and a preparation method of low-melting-point mixture of diesters of terephthalic acid. According to the preparation method, dimethyl terephthalate and mixed liquor of n-butanol and isobutanol are used as raw materials, and high-temperature-resistant acidic resin is used as a catalyst. The disadvantage that a product is hard to separate, separation processes are many, and there are lots of waste liquids in the prior art is overcome. Instruments and equipment used in the process by the method are simple. In addition, operation steps are simple, and yield of the target product is high.
Efficient carbonylation of aryl and heteroaryl bromides under atmospheric pressure of CO
Yang, Weizhun,Han, Wei,Zhang, Weidong,Shan, Lei,Sun, Jiansong
supporting information; experimental part, p. 2253 - 2255 (2011/10/19)
In the presence of Et and n-BuOH, efficient alkoxycarbonylation of (hetero)aromatic bromides was achieved under atmospheric pressure of carbon monoxide with in situ generated palladium/rac-BINAP as catalyst. Georg Thieme Verlag Stuttgart - New York.
Butoxycarbonylation of aryl halides catalyzed by a silica-supported poly[3-(2-cyanoethylsulfanyl)propylsiloxane palladium] complex
Cai, Ming-Zhong,Song, Cai-Sheng,Huang, Xian
, p. 2273 - 2274 (2007/10/03)
Aryl bromides and iodides react with carbon monoxide and n-butyl alcohol at 100°C and atmospheric pressure in the presence of tri-n-butylamine and a catalytic amount of a silica-supported sulfur palladium complex to form esters in moderate to good yields.
Process for the preparation of carboxylic acid esters from organic halides
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, (2008/06/13)
Carboxylic acid esters or amides are obtained from aryl, heterocyclic, vinylic, ethynylic, and benzylic halides and substituted derivates thereof, by reacting same with an alcohol or primary or secondary amine and carbon monoxide, in the presence of a palladium catalyst and if necessary a tertiary amine at about 20°-150° C and from about a half to about 100 atmospheres pressure. A typical example is the conversion of bromobenzene into n-butyl benzoate at 100° C and one atmosphere of carbon monoxide in the presence of tri-n-butyl-amine and a catalytic amount of PdBr2 [P(C6 H5)3 ]2.
