13080-85-8Relevant articles and documents
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; 0033, (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.
Functionalized Photoreactive Compounds
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, (2008/12/08)
The present invention concerns functionalized photoreactive compounds of formula (I), that are particularly useful in materials for the alignment of liquid crystals. Due to the adjunction of an electron withdrawing group to specific molecular systems bearing an unsaturation directly attached to two unsaturated ring systems, exceptionally high photosensitivities, excellent alignment properties as well as good mechanical robustness could be achieved in materials comprising said functionalized photoreactive compounds of the invention.
Synthesis of phthalonitrile resins containing ether and imide linkages
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, (2008/06/13)
Imide-containing phthalonitrile monomers are prepared from a phthalonitrile and an aromatic dianhydride. The monomer and a method for preparing the monomer is disclosed. These monomers are synthesized into heat resistant polymers and copolymers with aromatic ring structure incorporating imide and ether linkages. The synthesis of the high temperature thermosetting polymers and copolymers is also disclosed.