1,4-Cyclohexadienes can be directly synthesized by heating (2E,4E,6E)-hexatrienes in a mixture of toluene/MeOH or EtOH (2 : 1) solvents at 90–100 °C. This is done through a torquoselective disrotatory 6π-electrocyclic ring closure followed by a polar protic solvent-assisted proton-transfer process.
1,4-环己二烯可以通过在
甲苯/MeOH或EtOH(2:1)溶剂混合物中于90–100°C下加热( 2E , 4E , 6E )-六
三烯直接合成。这是通过扭矩选择性旋转 6π-电环闭合,然后是极性质子溶剂辅助的质子转移过程来完成的。