Modified BINAP: The how and the why

Article Abstract:

Several modifications of the structure of BINAP, a rare chiral ligand produced on an industrial scale, are made to increase its efficiency and selectivity. BINAP thus represents a successful research as several chemists have explored the possibility of catalyst complexes and improved their conditions of practical use.

Ligands, Ligands (Chemistry), Chemical synthesis

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Chalcogenides as organocatalysts

Article Abstract:

The application and scope of chalcogenides as organocatalysts in ylide-mediated synthesis of enantioselective aziridines is reviewed. The chalcogenides can also used in asymmetric synthesis of carbonyl compounds such as indole alkaloids.

Nonmetallic elements

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Stronger Bronsted acids

Article Abstract:

The application and scope of a new class of chiral Bronsted-acid organocatalysts used in number of enantioselective carbon-carbon bond-forming reactions is reviewed.

Observations, Chirality, Acid-base chemistry

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