Catalysis by hydrogen halides in the gas phase. XXIII. 1,1-Dimethoxyethane and hydrogen bromide

Abstract

Hydrogen bromide catalyses the gas-phase decomposition of 1,1- dimethoxy-ethane at 233-322° into methyl vinyl ether and methanol. The reaction, first-order in each reactant, is believed to be homogeneous and molecular.     The Arrhenius equation                   k₂ = 1.3x10¹³exp(-22160/RT) s^-1 cm₃ mol^-1 is followed. This decomposition is much faster than the analogous reactions of alcohols and ethers. The catalyst is effective when present in only 1% proportion.