Die addition von dibromcarben an [6] paracyclophan-8,9-dicarbonsäurediethylester
作者:Volker Königstein、Werner Tochtermann
DOI:10.1016/s0040-4039(00)84690-0
日期:1986.1
The hexano-bridged cycloheptatrienes 2 are obtained via addition of dibromocarbene to the [6]paracyclophane . The cyclooctatetraenes and are formed as by-products.
Determination of the reaction enthalpy and kinetic parameters for the isomerization of bridged Dewar benzenes to 8,9-disubstituted [6]paracyclophanes by differential scanning calorimetry
作者:Herbert Dreeskamp、Stefan M. Sarge、Werner Tochtermann
DOI:10.1016/0040-4020(95)00072-g
日期:1995.3
In solution the reaction enthalpy for the thermal isomerization of the Dewar isomers 2a and 2b to their corresponding 8,9-disubstituted [6]paracyclophanes 1a and 1b was determined as −128±13 kJ·mol−1 and −146±15 kJ·mol−1, while the activation energies were found to be 101±10 kJ·mol−1 and 117±12 kJ·mol−1 respectively. An improved calorimetric technique was employed using samples in sealed NMR tubes
作者:Liebe, Joerg、Wolff, Christian、Krieger, Claus、Weiss, Johannes、Tochtermann, Werner
DOI:——
日期:——
Die ringerweiterung von [6] paracyclophan-8,9-dicarbonsäurediethylester zu hexanocyclooctatetraen- und [8] paracyclophan-derivaten durch zweimalige addition von dihalogencarbenen
作者:Volker Königstein、Werner Tochtermann、Eva-Maria Peters、Karl Peters、Hans Georg von Schnering