TCN diester TCN-(CO2Me)2 was prepared by acid-catalyzed esterification of 1 with methanol. The TCN imides TCN-NBnanti, TCN-NCy, and TCN-NHex were prepared by condensation of 1 with benzylamine, cyclohexylamine, and n-hexylamine, respectively, in an analogous fashion to Warrener's procedure for preparing the N-methyl TCN imide from 1 and methylamine. All of these TCNs were crystalline solids wherein crystallization afforded the anti-isomer in a >95:5 anti:syn ratio in each case.