1. For allylic substitution, see: (a) Pfaltz A.Chimia2001,55, 708−714. (b) Helmchen, G.; Pfaltz, A.Acc. Chem. Res.2000,33, 336−345. (c) Haughton, L.; Williams, J. M. J.J. Chem. Soc., Perk. Trans.12000, 3335−3349. For Heck reaction, see: (d) Loiseleur, O.; Hayashi, M.; Keenan, M.; Schmees, N.; Pfaltz, A.J. Organomet. Chem.1999,576, 16−22. For hydrosilylation, see: (e) Nishiyama, H. InComprehensive Asymmetric Catalysis; Jacobsen, E. N., Pfaltz, A., Yamamoto, H., Eds.; Springer: Berlin, 1999; Vol. I, p 267. For hydroboration, see: (f) Kwong, F. Y.; Yang, Q.; Mak, T. C. W.; Chan, A. S. C.; Chan, K. S.J. Org. Chem.2002,67, 2769−2777 and references therein. For hydroformylation, see: (g) Abu-Gnim, C.; Amer, I.J. Organomet. Chem.1996,516, 235−243. (h) Basoli, C.; Botteghi, C.; Cabras, M. A.; Chelucci, G.; Marchetti, M.J. Organomet. Chem.1995,488, C20−C22. For transfer hydrogenation to ketones, see: (i) Braunstein, P.; Naud, F.; Pfaltz, A.; Rettig, S. J.Organometallics2000,19, 2676−2683. (j) Braunstein, P.; Graiff, C.; Naud, F.; Pfaltz, A.; Tiripicchio, A.Inorg. Chem.2000,39, 4468−4475.
2. Strong Electronic Effects on Enantioselectivity in Rhodium-Catalyzed Hydroborations with Novel Pyrazole-Containing Ferrocenyl Ligands