期刊
ORGANIC PROCESS RESEARCH & DEVELOPMENT
卷 14, 期 3, 页码 568-573出版社
AMER CHEMICAL SOC
DOI: 10.1021/op100011y
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High throughput screening was used to find a cost-effective and scalable catalyst for the asymmetric hydrogenation of a sterically demanding enamide as an intermediate towards a new potent melanocortin receptor agonist useful in the treatment of obesity. Lessons drawn from the testing of a first library of 96 chiral monodentate phosphoramidites led to the design of a second focused library of 16 chiral ligands, allowing the discovery of a new efficient catalyst. This catalyst was based on rhodium and a bulky monodentate phosphite ligand. The catalyst was scaled up and used in the kilogram production of the desired bulky chiral amide.
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