Enichem Anic S.p.a.

Salvatore R Sanna

Giuseppe Messina

Mario D Moretti

Giovanni Soma

Pier Gianni Cabras

Gavino Sanna

A process for the synthesis of vinyl ethers of formula ##STR1## wherein R.sub.1 and R.sub.2, each independently, represent hydrogen or a primary, secondary or tertiary alkyl group,

Process for the preparation of vinyl ethers

A new method of synthesis of a 2,2-dialkoxy-propane e.g. 2,2-dimethoxy-propane, is described through reaction of a cyclic ketal, e.g. 2,2-dimethyl-(1,3)-dioxolane, with a boric acid alkyl ester, e.g. boric acid trimethyl ester, in the presence of an acidic catalyst. The reaction may be carried out either in liquid or in vapor phase. In the latter case, heating of the thus obtained intermediate mixture to the reflux temperature should follow the catalytic step.

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Sorso, Italy

Salvatore R Sanna