25722-66-1Relevant articles and documents
Cyanate ester resin synthesis method
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Paragraph 0024-0035; 0043-0046, (2020/06/20)
The invention belongs to the field of synthesis of organic polymers, and particularly relates to a cyanate ester resin synthesis method. According to the method, the cyanogen halide and the bisphenolcompound are dissolved in the same solvent at the same time, and then a triethylamine/isopropanol catalyst is dropwise added into the solvent, so that the reaction time can be shortened, the reactionefficiency can be improved, the use amount of the solvent can be reduced, the problems of dissolution and dropwise addition of the bisphenol compound can be avoided, and the method is also suitable for some indissolvable special phenols. By adopting a triethylamine/isopropanol synthesis system, side reactions can be reduced, and the product purity can be improved. Starting from the dosage ratio ofthe raw materials, the bisphenol compound is excessive, so that the generation of other cyanides in the reaction solution can be avoided, and green production is realized.
Synthesis and characterization of new polynuclear bis-5-oxy-1H-tetrazoles
Mansoori,Sarvari,Zamanloo,Imanzadeh
experimental part, p. 154 - 157 (2009/09/06)
Different bis-phenols reacted with cyanogen bromide in the presence of triethylamine as base to give the corresponding bis-cyanates which were treated with sodium azide in acetone as solvent to produce new bis(5-oxy-1H-tetrazole) derivatives. One more bis-tetrazole derivative was synthesized by reaction of 5-(4-aminophenoxy)-1H-tetrazole with adipoyl chloride. The prepared compounds were characterized by usual spectroscopic techniques.
Structure of 2,2'-bis(4-cyanatophenyl)isopropylidene
Davies, Jonathan M. R.,Hamerton, Ian,Jones, John R.,Povey, David C.,Barton, John M.
, p. 285 - 289 (2007/10/02)
The title compound is monoclinic: a = 13.345(3), b = 11.393(2), c = 10.046(5) Angstroem, β = 108.48(2) deg, Z = 4, P21/c.The structure was determined by direct methods, using MoKα diffractometer data, and refined by full-matrix least squares to R = 0.045 for 1463 reflections.The structure shows a central tetrahedral carbon atom surrounded by two methyl and two phenylcyanate groups.The geometry of the cyanate group compares well with that in 4-chloro-3,5-dimethylphenyl cyanate, the only example of an organic cyanate in the Cambridge Crystallographic data-base (V.3).The intermolecular nitrile, C-H, distances were examined for evidence of a possible dimerization interaction; no significant distances were found.