Abstract Cyclohexane-1, 3, 5-tricarbonitrile reached equilibrium having 1, 3-cis-1, 5-cis and 1, 3-cis-1, 5-trans isomers in a ratio of 3: 7. The cis, cis-isomer preferred the conformation with three equatorial cyano groups, where as the cis, trans-isomer displayed two cyano groups on equatorial positions and another cyano group on axial position. Condensation of cis, cis-cyclohexane-1, 3, 5-tricarbonitrile with L-(S)-valinol by the catalysis of ZnCl 2 in ...