1. (a) Ugi, I. Angew. Chem. Int. Ed. 1962, 1, 8-21. (b) Ugi, I.
2. Marquarding, D. Liebigs Ann. Chem. 1967, 709, 1-10. (c) Ugi, I.
3. Kaufhold, G. Ann. 1967, 709, 11-28. (d) Ugi, I.
4. Pergamon: Oxford, 1991, Vol. 2, 1083. (Review). (e) Dömling, A.
5. Ugi, I. Angew. Chem. Int. Ed. 2000, 39, 3168. (Review). (f) Ugi, I. Pure Appl. Chem. 2001, 73, 187-191. (Review). Ivar Karl Ugi (1930-2005) earned his Ph.D. under the guidance of Prof. Rolf Huisgen. Since 1962, he worked at Bayer AG, rising through the ranks to director. But he left Bayer in 1969 to pursue his indendent academic career at the University of Southern California (USC). In 1973, he moved to the Technische Universität München, where stayed until his retirement in 1999. Ugi was one of the pioneers in multi-component reactions (MCRs).