Invisible Sun-Spots by Hale G. E.

By Hale G. E.

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These differences in selectivity are probably due to the steric and electronic properties of the biaryl backbone of these ligands [93b]. The hydrogenation of β-substituted itaconic acids and derivatives is more difficult. 19). 4 Reduction of itaconic acids. Substrate Catalyst H2 (bar) ee % Configuration Ref. 20 with Rh-Me-Duphos in which a trisubstituted olefin is reduced to afford a chiral succinate [94]. 1 Mechanistic Aspects of the Ru-(BINAP)-Catalyzed Hydrogenation of Carboxylic Acids Several groups, most notably those of Noyori [95], Halpern et al.

And Schmid, R. , AuAsymmetry, 8, 3617. L. C. , Jessop, Tetrahedron Letters, 45, 7379. , Ikariya, T. and Noyori, R. , Higashi, Tetrahedron Letters, 37, 2813. , Yasutake, M. , Eckert, Imamoto, T. T. and Pollet, and Catalysis, 343, 118. , Li, W. P. (2003) Green Chemistry, 5, 123. and Zhang, X. , Ogasawara, Asymmetry, 15, 2181. , Takahashi, T. and Uchida, Y. , Journal of Organometallic Chemistry, 428, Champion, N. and Dellis, P. (2004) 155. Angewandte Chemie (International Ed. , Sannicolo, English), 43, 320.

Roberts, S. and Whittall, J. 33 34 1 Reduction of Functionalized Alkenes 21 22 23 24 25 26 27 28 29 (2006) Journal of the American Chemical Society, 128, 3922. S. J. (2005) Organometallics, 24, 4824. A. L. (1993) Journal of the American Chemical Society, 115, 10125. G. G. (1998) Journal of the American Chemical Society, 120, 657. J. (2000) Accounts of Chemical Research, 33, 363. F. P. (1995) Journal of the American Chemical Society, 117, 9375. , Schmid, R. and Obrech, D. (1994) Helvetica Chimica Acta, 77, 1395.

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