Fra«s-l,2-dibromocyclohexane

The trans addition of bromine to C=C double bonds follows the onium mechanism generally formulated in Figure 3.32. Cyclohexene reacts stereoselectively to give (racemic ) fra s-l,2-dibromocyclohexane ... 

Conformational Equilibria and Related Topics.—Conformational Equilibria and Thermodynamic Functions. The electron-difiraction technique is often used to study conformational equilibria, as discussed in a recent review paper. Shortly after Hassel and Ottar had shown that cyclohexane exists in the chair form, the study of fra s-l,2-dibromocyclohexane showed that two conformers may coexist in the gas phase. In many cases the ratio... 

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