2′′-terpyridine and biq = 2,2′-bisquinoline). The photocatalytic system is not only highly efficient but also tolerant to amino acid residues. The combination of this photocatalyst with glutamate dehydrogenase enabled the controllable and efficient synthesis of L-glutamate to be realized. A mechanism involving light-induced ligand exchange, decarboxylation and hydride transfer has been proposed. Kinetic
在
钌络合物Ru(tpy)(biq)Cl 2(tpy = 2时)下,通过光催化转移氢化,成功实现了烟酰胺辅因子的高效再生,量子产率(Φ)为7.9×10 -3。 2':6',2''-
吡啶和biq = 2,2'-双
喹啉)。该光催化系统不仅高效,而且对
氨基酸残基具有耐受性。这种光催化剂与
谷氨酸脱氢酶的结合使得L的可控和有效合成成为可能-谷
氨酸待实现。已经提出了涉及光诱导的
配体交换,脱羧和
氢化物转移的机理。动力学同位素实验揭示的脱羧的[Ru(TPY)(BIQ)HCOO] +到的[Ru(TPY)(BIQ)H] +是速率决定步骤与3.2±0.4千卡mol的小表观活化能- 1。通过反应平衡估计[Ru(tpy)(biq)H] +的
水合度为40±3 kcal mol -1。