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Enantioselective Michael additions of β-keto esters to α,β-unsaturated carbonyl compounds catalyzed by a chiral biquinoline N,N′-dioxide–scandium trifluoromethanesulfonate complex

✍ Scribed by Makoto Nakajima; Satoshi Yamamoto; Yukiko Yamaguchi; Seiichi Nakamura; Shunichi Hashimoto

Book ID: 104205684
Publisher: Elsevier Science
Year: 2003
Tongue: French
Weight: 193 KB
Volume: 59
Category: Article
ISSN: 0040-4020
DOI: 10.1016/s0040-4020(03)01139-6

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✦ Synopsis

A catalytic, enantioselective Michael addition of b-keto esters to a,b-unsaturated carbonyl compounds was achieved by using a chiral biquinoline N,N 0 -dioxide-scandium trifluoromethanesulfonate complex as a catalyst. The corresponding Michael adducts were obtained in high yields and with enantioselectivities up to 84% ee.

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