Carbonate pyrolysis. Part 5. The gas-phase pyrolysis of some unsymmetrical monothiolcarbonates and a rationalisation of the rates of some related reactions

Abstract

Thiolcarbonates pyrolyse more slowly than carbonates. Where the sulphur atom is attached to the group which will form the olefin, this difference amounts to three orders of magnitude; when the sulphur atom is in the other ether position it is only ten-fold. These rate changes are discussed in terms of similar substitutions in thioacetates.