152971-88-5Relevant articles and documents
A through halogen bond activation isoquinoline asymmetric hydrogenation method
-
Paragraph 0037; 0038; 0039; 0046; 0062, (2019/03/26)
A through halogen bond activation isoquinoline asymmetric hydrogenation method, the catalyzing system is [...] complex, the activator is a halide. The reaction can be carried out under the following conditions, temperature: 25 - 100 °C; solvent: tetrahydr
A method catalyzed by iridium and used for bidirectional enantioselective synthesis of chiral tetrahydroisoquinoline
-
Paragraph 0035-0051; 0060; 0061; 0075, (2018/03/01)
A method catalyzed by iridium and used for bidirectional enantioselective synthesis of chiral tetrahydroisoquinoline is provided. A catalysis system adopted by the method is a chiral diphosphine complex of iridium. By utilizing a single chiral source and
Identification of an Imine Reductase for Asymmetric Reduction of Bulky Dihydroisoquinolines
Li, Hao,Tian, Ping,Xu, Jian-He,Zheng, Gao-Wei
supporting information, p. 3151 - 3154 (2017/06/23)
A new imine reductase from Stackebrandtia nassauensis (SnIR) was identified, which displayed over 25- to 1400-fold greater catalytic efficiency for 1-methyl-3,4-dihydroisoquinoline (1-Me DHIQ) compared to other imine reductases reported. Subsequently, an efficient SnIR-catalyzed process was developed by simply optimizing the amount of cosolvent, and up to 15 g L-1 1-Me DHIQ was converted completely without a feeding strategy. Furthermore, the reaction proceeded well for a panel of dihydroisoquinolines, affording the corresponding tetrahydroisoquinolines (mostly in S-configuration) in good yields (up to 81%) and with moderate to excellent enantioselectivities (up to 99% ee).