24072-93-3Relevant articles and documents
Arylboronic acid-catalyzed direct condensation of carboxylic acids with ureas
Maki, Toshikatsu,Ishihara, Kazuaki,Yamamoto, Hisashi
, p. 1355 - 1358 (2004)
The first example of the catalytic direct condensation of carboxylic acids with ureas to give N-acylureas, N,N′-diacyl-2-imidazolidones, and poly(N,N′-diacyl-2-imidazolidone)s is described. Arylboronic acids bearing electron-withdrawing substituents are highly effective as catalysts for this condensation. Furthermore, a new and efficient one-pot procedure for the conversion of carboxylic acids and urea to nitriles via N-acylurea intermediates was accomplished by using arylboronic acid and rhenium(VII) oxo complexes as hybrid catalysts.
Novel two-step, one-pot synthesis of primary acylureas
Xiao, Zili,Yang, Michael G.,Tebben, Andrew J.,Galella, Michael A.,Weinstein, David S.
experimental part, p. 5843 - 5844 (2010/11/05)
A new procedure for the synthesis of primary acylureas from cyanamide and a variety of carboxylic acids is described. Under mild reaction conditions, the products were obtained in good yield from commercially available starting materials.
HYDROLYSIS OF BARBITURIC ACID DERIVATIVES.PART IV. HYDROLYSIS OF DERIVATIVES WITHOUT SHIELDING STERIC EFFECT
Mokrosz, Jerzy,Bojarski, Jacek
, p. 491 - 500 (2007/10/02)
Kinetics and products of hydrolysis of the monoanion form of three C-5 spirobarbiturates with 4-, 5- and 6-membered rings and 5,5-dimethylbarbituric acid have been investigated.The pKa values of these compounds were determined and the analysis of C=O stretching modes has been carried out.The effects of substituents at the C-5 carbon atom of barbituric acids on the rates of hydrolysis are discussed.
