Recently I am researching about POLYARYLETHERKETONES; XANTHENE; BIPHENYL, Saw an article supported by the National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [51763012, 21965014]; Research Program of Jiangxi Science and Technology Department [20192BBE50049]; Ground Project for Science and Technology of Jiangxi Universities [KJLD14022]; Research Program of Jiangxi Province Department of Education [GJJ14236]; Graduate Student Innovation Foundation of Jiangxi Province [YJS2018060, YC2019-B041]. Published in SAGE PUBLICATIONS LTD in LONDON ,Authors: Zhang, ZY; Sheng, SR; Zhang, XL; Pan, Y; Liu, XL. The CAS is 99-93-4. Through research, I have a further understanding and discovery of 4′-Hydroxyacetophenone. Recommanded Product: 4′-Hydroxyacetophenone
4-(4-Diphenylphosphino)phenyl-2,6-bis(4-hydroxyphenyl)pyridine, as a new bisphenol monomer, was prepared from 4-(diphenylphosphino)benzaldehyde and 4-hydroxyacetophenone and used in the preparation of several aromatic poly(ether ketone)s (PEKs) containing 2,6-diphenylpyridyl units and diphenylphosphinophenyl pendant groups via a nucleophilic aromatic substitution polycondensation with difluorinated aromatic ketones. The polycondensation proceeded quantitatively in tetramethylene sulfone in the presence of anhydrous potassium carbonate and afforded the polymers with high molecular weights. The resulting PEKs are amorphous and exhibit high glass transition temperatures of 209-255 degrees C and 5% weight loss temperatures of 536-554 degrees C with char yields of 57-62% at 800 degrees C in nitrogen. Their high char yields and good limited oxygen index values ranging from 39 to 43 indicated these polymers exhibited good thermal stability and flame-retardant property. All new PEKs were soluble in common organic solvents such as N-methyl-2-pyrrolidone, N,N-dimethylacetamide, and chloroform and could form tough, flexible, and strong films with tensile strengths of 74.6-86.8 MPa, tensile moduli of 2.9-3.6 GPa, and elongations at break of 5-9%.
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Reference:
Indole alkaloid derivatives as building blocks of natural products from Bacillus thuringiensis and Bacillus velezensis and their antibacterial and antifungal activity study,
,Preparation of Indole Containing Building Blocks for the Regiospecific Construction of Indole Appended Pyrazoles and Pyrroles