Synthesis of chiral cyclic amines via Ir-catalyzed enantioselective hydrogenation of cyclic imines
作者:Ying Zhang、Duanyang Kong、Rui Wang、Guohua Hou
DOI:10.1039/c7ob00442g
日期:——
A highly enantioselective hydrogenation of cyclic imines for synthesis of chiral cyclic amines has been realized. With the complex of iridium and (R,R)-f-spiroPhos as the catalyst, a range of cyclic 2-aryl imines were smoothly hydrogenated under mild conditions without any additive to provide the corresponding chiral cyclic amines with excellent enantioselectivities of up to 98% ee. Moreover, this
Asymmetric Reduction of Cyclic Imines by Imine Reductase Enzymes in Non‐Conventional Solvents
作者:Davide Arnodo、Federica De Nardi、Stefano Parisotto、Eugenio De Nardo、Stefania Cananà、Federica Salvatico、Elisa De Marchi、Dina Scarpi、Marco Blangetti、Ernesto G. Occhiato、Cristina Prandi
DOI:10.1002/cssc.202301243
日期:2024.2.8
The first enantioselective reduction of 2-substituted cyclic imines to the corresponding chiral amines (of high pharmaceutical interest) by iminereductases (IREDs) in non-conventional solvents is reported. The process can be performed at a 100 mM substrate loading, and in a fed-batch methodology with a formal recycle of the catalytic system. These features entail the potential interest for large scale
据报道,首次在非常规溶剂中通过亚胺还原酶 (IRED) 将 2-取代环状亚胺对映选择性还原为相应的手性胺(具有很高的药用价值)。该过程可以在 100 mM 底物负载下进行,并采用分批补料方法,并正式回收催化系统。这些特征带来了在经济和环境可持续性方面大规模应用的潜在兴趣。