By Dieter Enders, Karl-Erich Jaeger, Günter Helmchen
Edited via of the major researchers within the box, this booklet presents a deep, interdisciplinary perception into stoichiometric and catalytic reactions during this always increasing sector. A plethora of most sensible German scientists with a global attractiveness covers a variety of facets, from classical natural chemistry to method improvement, and from the theoretical heritage to organic tools utilizing enzymes. during the concentration is at the improvement of recent man made tools in uneven synthesis, the synthesis of traditional and bioactive compounds and the most recent advancements in either chemical and organic tools of catalysis, in addition to the research of certain technical and biotechnical features.
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Extra resources for Asymmetric Synthesis with Chemical and Biological Methods
This was later extended to many different classes of electrophiles , as for instance in the diastereo- and enantioselective α ,α′-bisalkylation of 99 , demonstrating that these dialkylations occur with practically complete diastereo- and enantioselectivities to afford, after cleavage of the auxiliary 4,6-disubstituted 2,2dimethyl-1,3-dioxan-5-ones 100 with the 4,6-substituents in a trans relationship. 28). 29) . By employing the previously described reaction sequence, the protected diol 102 was synthesized in six steps in 69% yield.
Lausberg, Liebigs Ann. 1996, 1361. For recent applications, see: e) D. Enders, V. Lausberg, G. Del Signore, O. M. Berner, Synthesis 2002, 515; f) D. Enders, G. Del Signore, O. M. Berner, Chirality 2003, 15, 510; g) D. Enders, M. Milovanovic, E. Voloshina, G. Raabe, J. Fleischhauer, Eur. J. Org. Chem. 2005, 1984. 41 D. Enders, J. P. Shilvock, G. Raabe, J. Chem. Soc. Perkin 1. 1999, 1617. 42 a) R. Noyori, Asymmetric Catalysis in Organic Synthesis, John Wiley & Sons, New York, 1994, p. 56; b) H. Takaya, T.
2006, 29; b) D. Enders, L. Tedeschi, J. W. Bats, Angew. Chem. 2000, 112, 4774; Angew. Chem. Int. Ed. 2000, 39, 4605; c) L. Tedeschi, D. Enders, Org. Lett. 2001, 3, 3515. 31 a) J. G. Noltes, Rec. Trav. Chim. Pays-Bas 1965, 84, 782; b) J. Boersma, J. G. Noltes, Rec. Trav. Chim. Pays-Bas 1973, 92, 229. 32 T. Morita, Y. Okamoto, H. Sakurai, Tetrahedron Lett. 1978, 28, 2523. 33 a) D. Semenzin, G. Etemad-Moghadam, D. Albouy, O. Diallo, M. Koenig, M. J. Org. Chem. 1997, 62, 2414; b) D. Albouy, M. Laspéras, G.
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