6334-18-5Relevant articles and documents
An aerobic oxidation of alcohols into carbonyl synthons using bipyridyl-cinchona based palladium catalyst
Cheedarala, Ravi Kumar,Chidambaram, Ramasamy R.,Siva, Ayyanar,Song, Jung Il
, p. 32942 - 32954 (2021/12/02)
We have reported an aerobic oxidation of primary and secondary alcohols to respective aldehydes and ketones using a bipyridyl-cinchona alkaloid based palladium catalytic system (PdAc-5) using oxygen at moderate pressure. ThePdAc-5catalyst was analysed using SEM, EDAX, and XPS analysis. The above catalytic system is used in experiments for different oxidation systems which include different solvents, additives, and bases which are cheap, robust, non-toxic, and commercially available on the industrial bench. The obtained products are quite appreciable in both yield and selectivity (70-85%). In addition, numerous important studies, such as comparisons with various commercial catalysts, solvent systems, mixture of solvents, and catalyst mole%, were conducted usingPdAc-5. The synthetic strategy of oxidation of alcohol into carbonyl compounds was well established and all the products were analysed using1H NMR,13CNMR and GC-mass analyses.
A process for preparing 2, 3 - dichloro-benzaldehyde (by machine translation)
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Paragraph 0034-0066, (2019/11/20)
The present invention provides a process for preparing 2, 3 - dichloro formaldehyde of the method, the method including: the 2, 3 - two chlorine animal pens fork two bromines solution, water and catalyst through the dynamic tubular reactor to carry out the hydrolysis reaction to obtain the 2, 3 - dichloro formaldehyde; the method of the invention, through the use of dynamic tubular reactor, using novel process route, hydrogen bromide as the hydrolysis catalyst, homogeneous phase hydrolysis the continuous preparation of 2, 3 - dichloro formaldehyde, compared with the traditional tank reactor and the like, has high mass transfer efficiency, good heat transfer efficiency, automatic precise control, high safety, shortens the reaction time, only needs 1 h can finish in about reaction, improves the reaction conversion and yield, is very suitable for industrial production. (by machine translation)
Degradation of substituted phenols with different oxygen sources catalyzed by Co(II) and Cu(II) phthalocyanine complexes
Saka, Ece Tugba,Dügdü, Esra,ünver, Yasemin
, p. 1119 - 1130 (2019/05/17)
Research on substituted phenol degradations has received substantial attention. In this work, effective Co(II) and Cu(II) phthalocyanine complexes as catalysts were studied to degrade toxic phenols to harmless products. The effect of various process parameters, such as initial concentration of phenol, catalyst, oxygen sources, and temperature on the degradation reaction was investigated to achieve maximum degradation efficiency. The catalytic activities of Co(II) and Cu(II) phthalocyanines were evaluated for oxidation of phenolic compounds such as p-nitrophenol, o-chlorophenol, 2,3-dichlorophenol, and m-methoxyphenol. Co(II) phthalocyanine displayed good catalytic performance in degradation of 2,3-dichlorophenol to 2,3-dichlorobenzaldehyde and 2,3-dichloro-1,4-benzoquinone with the highest TON and TOF values within 3 h at 50 °C. The fate of catalyst during the degradation process was followed by UV–Vis spectroscopy.
