... CH3 CH3 This acetal was obtained in nearly quantitative yield from the carbinol CZH~SCHZC= CC(CH~)Z(OH) and ethyl vinyl ether under the catalytic influence of p-toluenesulfonic acid: CH3 CH3 H I I I I I ... Page 12. Chemistry of Acetyleriic Ethers 82 85 (1966) RECUEIL 591 ...