1: 92.2 percent / aq. KOH / 0 - 22 °C 2: 31 percent / pyridinium dichromate / dimethylformamide View Scheme

(S,S)-[1,2-cyclohexanediamino-N,N'-bis(3,5-di-t-butylsalicylidene)]cobaltIII*OAc; water in tetrahydrofuran T=0 - 20°C; 48 h;

(S,S)-[1,2-cyclohexanediamino-N,N'-bis(3,5-di-t-butylsalicylidene)]cobaltIII*OAc; water in tetrahydrofuran T=20°C; 38 h;

water; [(1-SS)-(Dibenzoyl-DTA)] T=5 - 20°C; Resolution of racemate; Product distribution / selectivity;

pyridine; N,N'-dimethyl-N,N'-propyleneurea; anhydrous 4,4'-bipyridyl; NiI2*3.9H2O; triethyl amine hydrochloride; sodium iodide; zinc T=20°C; 12 h;

ammonia in ethanol; water T=20 - 25°C; 1.5 h;

<b>With</b>&nbsp; potassium fluoride supported on Celite&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '741857', constants.ctx, '0')">acetonitrile</a> <br />0.5&nbsp;h;&nbsp;&nbsp;Reflux;&nbsp;&nbsp;regioselective reaction;&nbsp;<br /> &nbsp;