1969 Volume 42 Issue 12 Pages 3546-3550
The interchange reaction: CH3OCH=CH2+ROH \ ightleftarrows ROCH=CH2+CH3OH, which is catalyzed by Hg(OAc)2, has been studied. It was found that the equilibrium could be smoothly shifted toward the product by the selective absorption of the produced methanol on molecular sieves of the type 4A (MS-4A) and that the yield of the desired vinyl ether could be increased. According to this method, we prepared various vinyl ethers, including ethyl, isopropyl, isobutyl, t-butyl vinyl ether, and benzyl vinyl ethers. The yields of the alkyl vinyl ethers decrease as their alkyl groups become more electron-donating. The effects of the reaction conditions and the pretreatment of the molecular sieves have been investigated.
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