2-Substituted 5-alkylidene-6-(dimethylamino)methyl-1,3-cyclohexadienes (E)-4 and (Z)-4 were prepared by the reaction of α,4-disubstituted dimethyl[(trimethylsilyl)methyl]benzylammonium iodides 2 with cesium fluoride. Their E-isomers were stable at room temperature and could be used in the Diels-Alder reaction. Some related reactions are also described.
通过
铯氟化物与α,4-二取代的二甲基[(三甲基
硅基)甲基]苄基
铵碘化物的反应,制备了2-取代的5-烷叉基-6-(二甲基
氨基)甲基-
1,3-环己二烯(E)-4和(Z)-4。其E-异构体在室温下稳定,并可用于Diels-Alder反应。同时,还描述了一些相关的反应。