69728-91-2Relevant academic research and scientific papers
A feasibility study on the synthesis of phenylephrine via ruthenium-catalyzed homogeneous asymmetric hydrogenation
McGarrity, John F.,Zanotti-Gerosa, Antonio
scheme or table, p. 2479 - 2486 (2011/02/22)
We report a feasibility study on a new route to (R)-phenylephrine, based on the ruthenium-catalyzed asymmetric hydrogenation of an aminoketone precursor. The direct and fast asymmetric reduction of aminoketones or their hydrochloride salts is achievable at low catalyst loadings (molar substrate to catalyst ratio, S/C, >25,000/1, TOF up to 25,000 h-1) with high enantioselectivity (>95% ee), without the need for N-protection nor isolation of the free base prior to reaction.
