Experimental evidence to support viscosity dependence of rates of Diels-Alder reactions in solvent media.
This note is aimed at ascertaining whether rates of Diels-Alder reactions depend on the viscosity of solvent media in which the reactions are performed. On the basis of the data collected from the literature and in this laboratory, it is seen in general that the rates increase in the solvents with their viscosities ranging up to approximately 1.2 cP. In solvents possessing viscosities above 1.2 cP, a drop in the reaction rates is observed in all cases. The effect of temperature on the above phenomena is also examined.
Kumar
Anil
A
Physical Chemistry Division, National Chemical Laboratory, Pune 411008, India. akumar@ems.ncl.res.in
Deshpande
Suvarna S
SS