Huang Jingke, Wei Chunmei. The Diels-Alder Reactions of 4,4-Dimethoxythiobenzophenone with Sorbic Acid and Its Methyl Ester[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 1995,34(3):57-61.
Huang Jingke, Wei Chunmei. The Diels-Alder Reactions of 4,4-Dimethoxythiobenzophenone with Sorbic Acid and Its Methyl Ester[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 1995,34(3):57-61.DOI:
4-dimethoxythiobenzophenone(2)with sorbic acid oc-curred at room temperature to afford 83%cycloadduct and 17%isomer
while the reaction withsorbic acid methyl ester occurred at room temperature and the main cycloadduct was formed. The kinetic study showed that the Diels-Alder reactions of 2 with sorbic acid and its methylester are much slower than those with trans-1-substituted -1
3-butadienes.The reactions becomethe reversible due to the fact that the dienes have two substituted groups at C