Site and Enantioselective Aliphatic C−H Oxidation with Bioinspired Chiral Complexes

2021 ◽  
Author(s):  
Miquel Costas
Keyword(s):  
Catalysts ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 671
Author(s):  
Chad M. Bernier ◽  
Joseph S. Merola

A series of chiral complexes of the form Ir(NHC)2(aa)(H)(X) (NHC = N-heterocyclic carbene, aa = chelated amino acid, X = halide) was synthesized by oxidative addition of -amino acids to iridium(I) bis-NHC compounds and screened for asymmetric transfer hydrogenation of ketones. Following optimization of the reaction conditions, NHC, and amino acid ligands, high enantioselectivity was achieved when employing the Ir(IMe)2(l-Pro)(H)(I) catalyst (IMe = 1,3-dimethylimidazol-2-ylidene), which asymmetrically reduces a range of acetophenone derivatives in up to 95% enantiomeric excess.


Author(s):  
Maria Barcenilla Castellano ◽  
Cesar Folcia ◽  
Josu Ortega ◽  
Jesus Etxebarria ◽  
Silverio Coco ◽  
...  

Chiral gold(I) isocyanide complexes [Au(p-C6F4OR1)(p-CNC6H4(O2CC6H4(OR2)] with R1, R2 or both being (R)-2-octyl, display an interesting and unprecedented response to mechanical or thermal stress. For all the complexes, heating leads to...


2000 ◽  
Vol 104 (29) ◽  
pp. 6709-6717 ◽  
Author(s):  
Christine L. Maupin ◽  
Rachel S. Dickins ◽  
Linda G. Govenlock ◽  
Celine E. Mathieu ◽  
David Parker ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document