6914-90-5Relevant articles and documents
Cubane derivatives 1. Synthesis and molecular structures of the esters of 1,4-cubanedicarboxylic acid
Eremenko, L. T.,Romanova, L. B.,Ivanova, M. E.,Eremenko, I. L.,Nefedov, S. E.,Struchkov, Yu. T.
, p. 619 - 623 (2007/10/02)
An effective methods of esterification of 1,4-cubanedicarboxylic acid with alkylsulfuric acids is proposed.The derivatives of alkanols with substantially different pKa values are obtained in high yields.Molecular structures of the esters obtained are confirmed by various methods.The X-ray study showed a remarcable effect of the nature of an alkyl radical on the geometry of the cubane core. - Key words: 1,4-cubanedicarboxylic acid, esterification, alkylsulfuric acids, X-ray method.
SULFATION OF ALCOHOLS OF DIFFERENT STRUCTURES WITH CONCENTRATED SULFURIC ACID.
Savelyanov,Yakushin
, p. 1527 - 1531 (2007/10/02)
The authors report the results of a study of the applicability of these relationships to the whole series of aliphatic alcohols including industrial products. The concentration equilibrium constants of the reactions of these alcohols with 99. 5 mass % sulfuric acid are determined at 32. 5 degree , and it is shown that all the higher alcohols can be characterized by the same equilibrium constant, 3. 1 plus or minus 0. 5, which can therefore be recommended for practical calculations. The equilibrium constants were calculated from the rate constants of the forward and reverse reactions. It is shown that they depend on the relative basicities of sulfuric acid and monoalkyl sulfates.