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Asymmetric Lewis Acid Catalysis in Water: α-Amino Acids as Effective Ligands in Aqueous Biphasic Catalytic Michael Additions

✍ Scribed by Karolina Aplander; Rui Ding; Mikhail Krasavin; U. Marcus Lindström; Johan Wennerberg

Publisher
John Wiley and Sons
Year
2009
Tongue
English
Weight
359 KB
Volume
2009
Category
Article
ISSN
1434-193X

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Several transition-metal-based Lewis acid catalysts, especially FeCl 3 ¥ 7 H 2 O, CrCl 3 ¥ 6 H 2 O, and SnCl 4 ¥ 4 H 2 O, were shown to be highly effective for aza-type Michael reactions between electrophilic a,b-unsaturated compounds and both aliphatic and aromatic amines in aqueous solution. Advan