79296-50-7Relevant academic research and scientific papers
Optimization and a Kinetic Study on the Acidic Hydrolysis of Dialkyl α-Hydroxybenzylphosphonates
Harsági, Nikoletta,Rádai, Zita,Szigetvári, áron,Kóti, János,Keglevich, Gy?rgy
, (2020/09/04)
The two-step acidic hydrolysis of α-hydroxybenzylphosphonates and a few related derivatives was monitored in order to determine the kinetics and to map the reactivity of the differently substituted phosphonates in hydrolysis. Electron-withdrawing substituents increased the rate, while electron-releasing ones slowed down the reaction. Both hydrolysis steps were characterized by pseudo-first-order rate constants. The fission of the second P-O-C bond was found to be the rate-determining step.
LA FORMATION DE SELS AUGMENTE-T-ELLE LA FREQUENCE DES DEDOUBLEMENTS SPONTANES
Jacques, Jacques,Leclercq, Martine,Brienne, Marie-Josephe
, p. 1727 - 1733 (2007/10/02)
The resolution by entrainment which allows the pure enantiomers to be obtained by direct crystallization of the racemate is possible only when the racemate is a conglomerate (eutectic mixture).Spontaneous resolutions exist to an extent less than 10percent
