| 摘要 |
Ethers of phenyl methyl carbonol and its homologues are produced by heating styrene or a homologue thereof with an alcohol in the presence of an acidic catalyst and in the presence of phenyl acetylene. An additional relatively non-volatile polymerization inhibitor such as pyrogallol or hydroquinone may also be present. Particularly suitable alcohols are the higher monohydric alcohols boiling above 160 DEG C., e.g. benzyl alcohol, beta-phenyl ethanol, n-hexyl alcohol and its homologues or a monohydric ether of a polyhydric alcohol and these may be suitably condensed with styrene or its homologues such as para-methylstyrene and vinyl xylene. In examples, styrene is heated under reflux with benzyl alcohol, beta-phenyl-ethyl alcohol and ethylene glycol monobutyl ether respectively. In each case, p-toluene sulphonic acid is used as catalyst and each reaction is effected using pyrogallol and phenylacetylene respectively as polymerization inhibitors, somewhat greater yields of the ether product being obtained with the latter. The products are benzyl alpha-methyl benzyl ether, beta-phenyl-ethyl alpha-methyl benzyl ether and butoxyethyl alpha-methyl benzyl ether respectively. Specification 517,934 is referred to. p |
