17095-00-0Relevant articles and documents
Green synthesis of symmetric aryl ether dinitro compounds in deep eutectic solvents
Jin, Yan,Ding, Yinhao,Hou, Xichao,Dong, Jingjing,Lu, Jianqiang,Feng, Baicheng
, p. 101 - 107 (2020/03/17)
A series of symmetric aryl ether dinitro compounds were synthesized by 4Urea/ZnCl2 as green solvent and catalyst, and halogenated aromatic hydrocarbon derivatives and dihydroxy compounds as raw materials. This method has the advantages of easy operation, simple recrystallization, environmental friendliness and biodegradability. The structures of the products were subjected to 1H NMR, and the reaction conditions, reaction mechanism and greening advantages of deep eutectic solvents were discussed at the end of the experiments. We learned from the results of the experiments that both the aliphatic dihydroxy compounds and the aromatic dihydroxy compounds could proceed effectively in Ullmann reaction, and the desired products could be obtained in acceptable yields. When using this methodology, symmetric aryl ether dinitro compounds could be synthesized simply at 80oC in 2 h with high yields (66%~94%). Meanwhile, the DES, called deep eutectic solvent which is composed of 4Urea/ZnCl2, could be recycled at least five times without an obvious decraese in the catalytic activity.
Synthesis, Characterization, and Phytotoxic and Antifungal Activities of Biphenyl Derivatives
Ali,Irshad,Asghar
, p. 2177 - 2182 (2018/12/11)
Three series of biphenyl derivatives are synthesized, characterized and evaluated for Lemna minor phytotoxicity and antifungal activity. The synthetic biphenyl analogues 2c and 6c demonstrate significant activity, while compounds 4b and 6b demonstrate hig
Preparation method of 4,4'-bis(4-aminophenoxy)biphenyl
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Paragraph 0031; 0032, (2017/01/12)
The invention relates to a preparation method of 4,4'-bis(4-aminophenoxy)biphenyl. The preparation method includes the steps that with biphenol and p-nitrchlorobenzene as raw materials, a salt forming agent and a strong-polarity aprotic solvent are added and mixed under nitrogen protection, a reflux reaction is performed for 3-5 h at 130-140 DEG C, filtration is performed at the high temperature, filtration residues are removed, deionized water is dropwise added into filtrate, and cooling, filtration, washing and drying are performed to obtain 4,4'-bis(4-nitrophenoxy)biphenyl; with 4,4'-bis(4-nitrophenoxy)biphenyl as a raw material, organic amine, Ni and an ester organic solvent are added under nitrogen protection, a heat preservation reaction is performed for 5-8 h at the pressure of 10-20 atm and the temperature of 40-70 DEG C, filtration is performed, the solvent is removed, and then 4,4'-bis(4-aminophenoxy)biphenyl is obtained. A catalyst selected for the preparation method has high selectivity, subsequent purification is not needed, the product quality and yield are high, the operation process is simple and safe, the cost is low, and industrial production is facilitated.
Synthesis of Monosubstituted Polynuclear Phenols Containing a Nitrophenoxy Fragment
Dorogov,Derevyagin,Budanov,Plakhtinskii,Kotov
, p. 655 - 657 (2007/10/03)
A numbers of monosubstituted polynuclear phenols have been synthesized by reaction of p-chloronitrobenzene or m-dinitrobenzene with various bisphenols.