10-phenanthroline), isolated as the water-soluble chloride salts, for transfer hydrogenation of NAD+ to give NADH in aqueous solution. The best results were obtained with rhodium complex 1, which gave catalytic turnover frequencies up to 2000 h–1 in aqueous solution at pH 7 and 60 °C with sodium formate as the hydrogen source. When this NADH-regenerating catalytic system is combined with NADH-dependent enzymes
在醇脱氢酶催化的酮的对映选择性还原中消耗的烟酰胺辅酶
NADH 需要再生以保持酶活性。因此,我们研究了阳离子配合物 [(η5-C5Me5)Rh(N∩N)Cl]+ (1: N∩N = 1,10-phenanthroline; 2: N∩N = 5-nitro-1, 10-
菲咯啉; 3: N∩N = 5-amino-1,10-
菲咯啉), [(η5-C5Me5)Ir(N∩N)Cl]+ (4: N∩N = 5-nitro-1,10 -phenanthroline) 和 [(η6-C6Me6)Ru(N∩N)Cl]+ (5: N∩N = 5-nitro-1,10-phenanthroline),分离为
水溶性
氯化物盐,用于转移氢化
NAD+在
水溶液中得到
NADH。使用
铑配合物 1 获得了最好的结果,在 pH 7 和 60 °C 的
水溶液中,以
甲酸钠作为氢源,其催化转化频率高达 2000 h-1。当这种
NADH