Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels. 519-73-3, Name is Triphenylmethane, molecular formula is C19H16. In an article, author is Dikusar, E. A.,once mentioned of 519-73-3, Product Details of 519-73-3.
Functionally Substituted Isothiazole- and Isoxazolecarboxamides
Convenient synthetic approaches to functionally substituted 5-phenyl-1,2-oxazole-3-carboxamides and 4,5-dichloro-1,2-thiazole-3-carboxamides were developed on the basis of reactions of the corresponding carboxylic acid chlorides with primary aromatic and aliphatic amines. Optimal ratios acid chlorideamine (or amine hydrochloride)-triethylamine were found so that the reaction did not involve active chlorine atom in position 5 of the isothiazole ring.
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Reference:
Isothiazole – Wikipedia,
,Isothiazole – ScienceDirect.com