1275593-47-9Relevant articles and documents
Highly enantioselective hydrogenation of styrenes directed by 2′-hydroxyl groups
Wang, Xiang,Guram, Anil,Caille, Seb,Hu, Jack,Preston,Ronk, Michael,Walker, Shawn
, p. 1881 - 1883 (2011/05/15)
A new synthetic strategy that turns styrene-type olefins into excellent substrates for Rh-catalyzed asymmetric hydrogenation by installing a 2′-hydroxyl substituent is described. This methodology accommodates trisubstituted olefinic substrates in various E/Z mixtures, leading to valuable benzylic chiral compounds including (R)-tolterodine. It is also demonstrated that the 2′-hydroxyl groups could be readily removed in high yield without loss of ee from the products. Thus, this technology represents an attractive alternative to the Ir(P-N) catalyst system for the asymmetric hydrogenation of unfunctionalized olefins.
