in N,N-dimethyl-formamide T=20°C; 528 h; Inert atmosphere;

[(η6-p-cymene)((1S,2S)-N-p-toluenesulfonyl-1,2-diphenylethylenediamine)RuCl]; formic acid; triethylamine in acetonitrile T=-15°C; 5 h; Inert atmosphere; enantioselective reaction;

1: N,N'-bis(trimethylsilyl)sulfamide; boron trifluoride diethyl etherate / toluene / 8 h / 20 °C / |Inert atmosphere 2: triethylamine; [(η6-p-cymene)((1S,2S)-N-p-toluenesulfonyl-1,2-diphenylethylenediamine)RuCl]; formic acid / acetonitrile / 5 h / -15 °C / |Inert atmosphere View Scheme

hydrogenchloride; amidosulfamic acid in ethanol