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New Chiral Scandium(III)/Bisimine and Diol Complex Catalyzed Asymmetric Diels—Alder Reaction.

✍ Scribed by Shin-ichi Fukuzawa; Yoshitaka Komuro; Narihito Nakano; Shinya Obara

Publisher
John Wiley and Sons
Year
2003
Weight
83 KB
Volume
34
Category
Article
ISSN
0931-7597

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New chiral scandium(III)/bisimine and di
New chiral scandium(III)/bisimine and diol complexes catalyzed asymmetric Diels–Alder reaction
✍ Shin-ichi Fukuzawa; Yoshitaka Komuro; Narihito Nakano; Shinya Obara 📂 Article 📅 2003 🏛 Elsevier Science 🌐 French ⚖ 81 KB

Several bisimine and diol-based chiral ligands were examined as scandium(III) triflate complexes in the asymmetric Diels-Alder reaction of cyclopentadiene (2) with 3-acryloyloxazolidin-2-one (1) in the presence of 2,6-lutidine: the scandium/salen complex was revealed to be the most effective catalys

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Asymmetric Hetero-Diels-Alder Reactions Catalyzed by Chiral (Salen)Chromium(III) Complexes. -The title reactions between (I) and a wide range of aldehydes require only 2 mol% of the catalyst and afford the pyranone derivatives (III) with good enantioselectivity. Among different derivatives of the c