ArticleOrganic letters2024
Highly Enantioselective Synthesis of 3,3-Diarylpropyl Amines and 4-Aryl Tetrahydroquinolines via Ir-Catalyzed Asymmetric Hydrogenation.
Article in Organic letters, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Chiral nitrogen-containing compounds are crucial for the chemical, pharmaceutical, and agrochemical industries. Nevertheless, the synthesis of certain valuable scaffolds remains underdeveloped due to the vast chemical space available. In this work, we present a diastereoselective methodology for synthesizing 3,3-diarylallyl phthalimides, which, following iridium-catalyzed asymmetric hydrogenation using Ir-UbaPHOX, yield 3,3-diarylpropyl amines with high enantioselectivity (98-99% ee). The importance of alkene purity to achieve high enantioselectivity is discussed. The synthetic utility of the chiral propylamines obtained is demonstrated through the preparation of medicinally useful bioactive compounds like the drugs tolterodine and tolpropamine and 4-aryl tetrahydroquinolines. This strategy enables the synthesis of these compounds with the highest enantioselectivity reported to date.
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