For biocatalytic preparation by selective redution of the C=C bond of 1-nitrocyclohexene, see Mansell, D.J., Toogood, H.S., Waller, J., Hughes, J.M.X., Levy, C.W., Gardiner, J.M., and Scrutton, N.S. (2013) Biocatalytic asymmetric alkene reduction: crystal structure and characterization of a double bond reductase from Nicotiana tabacum. ACS Catal. 3, 370-379.