Enantioselective Rh-catalyzed hydrogenation of enol acetates and enol carbamates with monodentate phosphoramidites
L Panella, BL Feringa, JG de Vries, AJ Minnaard
Index: Panella, Lavinia; Feringa, Ben L.; De Vries, Johannes G.; Minnaard, Adriaan J. Organic Letters, 2005 , vol. 7, # 19 p. 4177 - 4180
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Citation Number: 63
Abstract
Monodentate phosphoramidites, in particular PipPhos and its octahydro analogue, are excellent ligands for the rhodium-catalyzed asymmetric hydrogenation of aromatic enol acetates, enol carbamates, and 2-dienol carbamates up to 98% ee. These latter substrates were hydrogenated selectively to the carbamates of the allyl alcohol.
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