Download Comprehensive Asymmetric Catalysis (Comprehensive Overviews by Eric N. Jacobsen, Andreas Pfaltz, Hisashi Yamamoto PDF

By Eric N. Jacobsen, Andreas Pfaltz, Hisashi Yamamoto

Entire uneven Catalysis seriously experiences tools for the catalytic training of chiral natural compounds. This significant reference set offers the state-of- the-art during this region. The across the world acclaimed editors and the participants, who're well-known specialists within the box, warrantly the authoritative and well timed assurance. This set isn't just the valuable reference resource for artificial natural chemists, but additionally for all medical researchers who require chiral compounds of their paintings (for instance in biochemical investigations and molecular drugs) in addition to for pharmaceutical chemists, agricultural chemists and different business researchers who organize chiral compounds. The CD-ROM comprises the entire textual content seek and a cutting-edge image substructure seek regimen for compounds and reactions. hence, bettering the worth of the e-book set.

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Extra info for Comprehensive Asymmetric Catalysis (Comprehensive Overviews in Chemistry)

Example text

2 Survey of Stereogenic Reactions . . . . . . . 1 Mechanism Controlled Reactions. . . . . . . 1 SN2-Displacements . . . . . . . . . . . 2 SN2'-Displacements. . . . . . . . . . . 3 SE2'-Displacements . . . . . . . . . . . 4 Wagner-Meerwein-Type 1,2-Migrations . . . . . 5 Sigmatropic Rearrangements . . . . . . . . 1 Claisen-Rearrangements. . . . . . . . . . 2 [2,3]-Wittig Rearrangements . . . . . . . . 2 The Problem of Stereoselectivity .

The first positive results were given using a chiral iron porphyrine as the catalyst and PhIO as the oxygen donor, according to a publication by Groves and Meyer in 1983 [70]. The enantioselectivity was low (51% ee) for the epoxidation of p-chlorostyrene, and the method was not practical. In 1990, chiral salen Mn complexes 19 (Scheme 11) were successfully used by Jacobsen et al. [71] and Katsuki et al. [72] for catalytic epoxidation of alkenes, enantioselectivities reaching 90% ee. This approach was developed in the following years into a useful method (ee’s up to 98%), especially by Jacobsen et al.

3 Substrate Plus Reagent Controlled Reactions . . . . 1 Simple Diastereoselection . . . . . . . . . 2 exo/endo-Diastereoselectivity . . . . . . . . 4 Auxiliary Controlled Reactions . . . . . . . . 5 Chiral Catalysis . . . . . . . . . . . . 6 Double Stereodifferentiation . . . . . . . . 4 Practical Applications . . . . . . . . . Industrial Synthesis of Diltiazem via Chiral Catalysis Application of a Chiral Auxiliary in the Synthesis of ICI D1542 .

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