Design of a Genetic Algorithm for the Simulated Evolution of a Library of Asymmetric Transfer Hydrogenation Catalysts
作者:Nicolas Vriamont、Bernadette Govaerts、Pierre Grenouillet、Claude de Bellefon、Olivier Riant
DOI:10.1002/chem.200802192
日期:2009.6.15
Breeding newcatalysts: A library of 1980 catalysts was designed for asymmetrichydrogentransfer to acetophenone. The library was submitted to evaluation and further simulated evolution experiments, based on a genetic algorithm (see scheme). We demonstrated that it was easily possible to get 5–6 of the ten best catalysts, while investigating only 10% of the library.
Asymmetric Synthesis of Chiral 1,2-Amino Alcohols and Morpholin-2-ones from Arylglyoxals
作者:Wyatt C. Powell、Maciej A. Walczak
DOI:10.1021/acs.joc.8b01516
日期:2018.9.7
Chiral 1,2-amino alcohols are privileged scaffolds with important applications as drug candidates and chiral ligands. Although various methods for the preparation of this structural motif have been reported, these methods are limited because of the use of precious metals and ligands. Here, we report a practical and high yielding synthesis of chiral 1,2-amino alcoholsusing arylglyoxals and pseudoephedrine
Stereoselective Conjugate Addition Reactions of α,β-Unsaturated <i>tert</i>-Butyl Esters with Aryllithium Reagents
作者:Lisa F. Frey、Richard D. Tillyer、Alain-Sebastien Caille、David M. Tschaen、Ulf-H. Dolling、Edward J. J. Grabowski、Paul J. Reider
DOI:10.1021/jo971723c
日期:1998.5.1
Copper-Catalyzed Regio- and Stereoselective Ring-Opening of Cyclic Sulfamidates with Grignard Reagents assisted by Lithium Chloride
作者:Pitchaiah Arigala、Venkata S. Sadu、In-Taek Hwang、Jin-Soo Hwang、Chul-Ung Kim、Kee-In Lee
DOI:10.1002/adsc.201400850
日期:2015.6.15
Copper‐catalyzed ring‐opening reactions of cyclic 1,2‐sulfamidates with a wide range of Grignard reagents have been investigated. The use of lithium chloride as an additive is essential to activate CO bond cleavage. The reaction represents highly regio‐ and stereoselective, and thus allows for efficient synthesis of enantioenriched α‐branched benzylamine derivatives. Furthermore, we demonstrated that