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  • Title: Novel and efficient chiral bisphosphorus ligands for rhodium-catalyzed asymmetric hydrogenation.
    Author: Tang W, Capacci AG, White A, Ma S, Rodriguez S, Qu B, Savoie J, Patel ND, Wei X, Haddad N, Grinberg N, Yee NK, Krishnamurthy D, Senanayake CH.
    Journal: Org Lett; 2010 Mar 05; 12(5):1104-7. PubMed ID: 20148522.
    Abstract:
    A series of structurally novel, operationally convenient, and efficient chiral 2-phosphino-2,3-dihydrobenzo[d][1,3]oxaphosphole ligands was developed. Applications of ligands 3a and 3b in rhodium-catalyzed asymmetric hydrogenation of alpha-(acylamino)acrylates and beta-(acylamino)acrylates provided excellent enantioselectivities (up to >99% ee) and reactivities (up to 10,000 TON).
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