A new synthesis of [2.2.2]paracyclophene (1) is presented on reduction,(1) forms a stable dianion which is neither diatropic. nor paratropic. The apparent high symmetry of the dianion and the observed NMR chemical shifts are best explained by a rapid interconversion of a series of 2-conformers.
在还原时提出了[2.2.2]对环吩(1)的新合成,(1)形成了稳定的二价阴离子,且没有二价键。也不是副生的。阴离子的明显高对称性和观察到的NMR
化学位移可以通过一系列2-构型异构体的快速相互转化得到最好的解释。