Collect. Czech. Chem. Commun. 1985, 50, 1548-1552

CO2 laser photosensitized dehydrobromination of bromoethane and 1-bromopropane. A hot-tube radical-chain reaction with molecular mechanism

Pavel Kubát and Josef Pola

Institute of Chemical Process Fundamentals, Czechoslovak Academy of Sciences, 165 02 Prague 6-Suchdol


Contrary to the gas-phase hot-tube reaction taking place by a blend of a molecular and radical-chain mechanism, the cw CO2 laser induced dehydrobromination of bromoethane and 1-bromopropane occurs by only a molecular mechanism which is substantiated with reaction rates and products in the absence and the presence of radical-chain inhibitor (propene) and in the presence of chloroethane. The results point out the importance of hot walls for the initiation of radical-chain dehydrobromination.