作者:G. Mann、H. Werner、D. Miethe、M. Mühlstädt
DOI:10.1016/0040-4020(72)88063-3
日期:1972.1
The six possible cis-trans-isomeric 1,2,3,4-tetramethylcyclohexanes were prepared stereospecifically. Three isomers are obtainable pure via Diels-Alder reaction. The starting compounds of the other three isomers can be prepared by thermodynamically controlled isomerizations taking advantage of energy differences of cyclic esters and anhydrides, which are caused by conformational effects. The physical
立体定向制备了六种可能的顺反异构体1,2,3,4-四甲基环己烷。通过Diels-Alder反应可得到三种纯的异构体。其他三种异构体的起始化合物可以通过热力学控制的异构化反应,利用构象效应引起的环酯和酸酐的能量差异来制备。确定所得化合物的物理数据,并将其与理论估计值进行比较。