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ChemInform Abstract: Synthesis of Unsaturated Lactone Moieties by Asymmetric Hetero Diels—Alder Reactions with Binaphthol-Titanium Complexes.

✍ Scribed by Monika Quitschalle; Mathias Christmann; Ulhas Bhatt; Markus Kalesse

Publisher: John Wiley and Sons
Year: 2010
Weight: 29 KB
Volume: 32
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.200123124

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## Abstract Highly enantioselective Diels–Alder (DA) and inverse‐electron‐demand hetero‐Diels–Alder (HDA) reactions of β,γ‐unsaturated α‐ketoesters with cyclopentadiene catalyzed by chiral __N__,__N′__‐dioxide–Cu(OTf)~2~ (Tf=triflate) complexes have been developed. Quantitative conversion of β,γ‐un