Cyclohexene is produced by the partial hydrogenation of benzene, a process developed by the Asahi Chemical company.[3] The main product of the process is cyclohexane because cyclohexene is more easily hydrogenated than benzene.
Cyclohexene is most stable in a half-chair conformation,[10] unlike the preference for a chair form of cyclohexane. One basis for the cyclohexane conformational preference for a chair is that it allows each bond of the ring to adopt a staggered conformation. For cyclohexene, however, the alkene is planar, equivalent to an eclipsed conformation at that bond.
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