95152-18-4Relevant articles and documents
Ru-Catalyzed Selective C(sp3)?H Monoborylation of Amides and Esters
Yao, Wubing,Yang, Jianguo,Hao, Feiyue
, p. 121 - 125 (2020)
A ruthenium-catalyzed method has been developed for the C(sp3)?H monoborylation of various unactivated alkyl and aryl amides and challenging esters, with a low-cost and bench-stable boron source, providing boronates with exclusive selectivity, high efficiency, and high turnover number (up to 8900). This novel strategy may offer a versatile and environmentally friendly alternative to current methods for selective C(sp3)?H borylation that employ even more expensive metals, such as iridium and rhodium.
NUCLEOPHILIC CATALYSIS IN THE FORMATION OF ESTERS. THE EFFECT OF THE CHARACTERISTICS OF THE MEDIUM
Drizhd, L. P.,Bondarenko, L. I.,Savelova, V. A.,Litvinenko, L. M.,Kirichenko, A. I.,Yakovets, A. A.
, p. 2187 - 2193 (2007/10/02)
The rate constants were determined for the individual stages of nucleophilic catalysis by 4-dimethylaminopyridine in the reaction of 4-dimethylaminobenzoyl chloride with benzyl alcohol in volume mixtures of methylene chloride with benzene (1:1, 1:5, 1:9) at 25 deg C.The corresponding acylpyridinium salt is formed in all the solvents.In the subsequent fast equilibrium stage it forms a complex, which dissociates slowly into the final reaction products.Suggestions are made about the structures of the respective transition states on the basis of the nature of variation in the rate constants of the individual stages as a function of the solvating power of the medium.