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Novel Diamino and Diimino Thioethers – Chiral Tridentate Ligands for Asymmetric Michael Reactions?

✍ Scribed by Jens Christoffers; Alexander Mann

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 234 KB
Volume: 1999
Category: Article
ISSN: 1434-193X
DOI: 10.1002/(sici)1099-0690(199906)1999:6<1475::aid-ejoc1475>3.0.co;2-r

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✦ Synopsis

Novel C 2 -symmetric enantiopure β,βЈ-diamino thioethers 1 achieving the enantioselective catalysis of a Michael reaction of a β-oxo ester with methyl vinyl ketone resulting in an and β,βЈ-diimino thioethers 2 have been prepared from chiral α-amino acids. Nine of these compounds have been screened

optimal ee of 17%. as ligands, in combination with 13 metal salts, with a view to

Michael Reactions

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