The cause of the rate acceleration by diethyl ether solutions of lithium perchlorate (LPDE) in organic reactions. Application to high pressure synthesis
作者:Gérard Jenner、Ridha Ben Salem
DOI:10.1016/s0040-4020(97)00172-5
日期:1997.3
Kinetic studies of isoprene cyclodimerization show that the accelerating effect caused by LPDE (solution of lithium perchlorate in diethyl ether) in some organic reactions cannot be ascribed to internal pressure of LPDE. The kinetic effect is essentially due to catalysis through Li+. Additional arguments are provided by comparison of yields obtained in LPDE (0,1 MPa) and in organic solvents (under
Effect of water on chemo- and endo-selectivity in high pressure Diels-Alder furan reactions. Hydrophobic or polar effects?
作者:Gérard Jenner
DOI:10.1016/0040-4039(94)88020-4
日期:1994.2
Diels-Alder furan additions are less sensitive to pressure in aqueous solution than in organic solvents. In some cases, water affects chemo- and stereoselectivity. The interpretation takes into account hydrophobic as well as polar effects induced by water.
[EN] MULTIFUNCTIONALIZED POLYETHYLENE GLYCOL DERIVATIVE AND PREPARATION METHOD THEREFOR<br/>[FR] DÉRIVÉ DE POLYÉTHYLÈNE GLYCOL MULTIFONCTIONNALISÉ ET SON PROCÉDÉ DE PRÉPARATION<br/>[ZH] 一种多官能化聚乙二醇衍生物及其制备方法