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Novel Cinchona-Aminobenzimidazole Bifunctional Organocatalysts

✍ Scribed by Lei Zhang; Myoung-Mo Lee; Soo-Mi Lee; Jihye Lee; Maosheng Cheng; Byeong-Seon Jeong; Hyeung-geun Park; Sang-sup Jew

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
183 KB
Volume
351
Category
Article
ISSN
1615-4150

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✦ Synopsis

Efficient Cinchona-derived chiral 2-aminobenzimidazole catalysts were prepared by the coupling of 5,7-bis(trifluoromethyl)-2-chlorobenzimidazole with C(9S)-aminodihydroquinine or C(9R)-aminodihydroquinidine and successively applied to the Michael addition of dimethyl malonate to nitroolefins as very efficient chiral Lewis acid bifunctional organocatalysts (up to > 99% ee).

πŸ“œ SIMILAR VOLUMES

ChemInform Abstract: Novel Cinchona-Amin
ChemInform Abstract: Novel Cinchona-Aminobenzimidazole Bifunctional Organocatalysts.
✍ Lei Zhang; Myoung-Mo Lee; Soo-Mi Lee; Jihye Lee; Maosheng Cheng; Byeong-Seon Jeo πŸ“‚ Article πŸ“… 2010 πŸ› John Wiley and Sons βš– 40 KB

## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a β€œFull Text” option. The original article is trackable v

Cinchona Derivatives as Bifunctional Org
Cinchona Derivatives as Bifunctional Organocatalysts for the Direct Asymmetric Nitroaldol (Henry) Reaction.
✍ Tommaso Marcelli; Richard N. S. van der Haas; Jan H. van Maarseveen; Henk Hiemst πŸ“‚ Article πŸ“… 2006 πŸ› John Wiley and Sons βš– 18 KB πŸ‘ 1 views

## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.