The Ionic Telomerization of Conjugated Diene Compounds. I. The Cationic Telomerization of Butadiene with Its Hydrochlorides at Low Temperatures

Publisher Website
Google Scholar
Abstract
The telomerization of butadiene with its hydrochlorides (1-chlorobutene-2 and 3-chloro-butene-1) at low temperatures in the presence of cationic catalysts was investigated. The aim of the present investigation is to’ explore methods to control the molecular weight of the products with various reaction conditions, and to determine the properties and structure of the telomers obtained. The activity of several cationic catalysts at −50–−40°C, and the effects of the conversion and the ratio of chlorobutene to butadiene (RCl/Bu) on the yield and average molecular weights of the telomers were investigated. The products were divided into simple adducts and higher telomers by vacuum distillation. The fraction of the 1 : 1 adduct contained three isomers, one of which was 1-chlorooctadiene-2, 6. The structure and properties of the higher telomers were investigated by the aid of the infrared spectra, the average molecular weight, the iodine value, and elementary analysis. On the basis of the results, the reaction mechanism was discussed.

This publication has 3 references indexed in Scilit: