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ChemInform Abstract: Bismuth(III) Chloride or Triflate-Catalyzed Dienophilic Activity of . alpha.-Ethylenic Aldehydes and Ketones.

✍ Scribed by B. GARRIGUES; F. GONZAGA; H. ROBERT; J. DUBAC

Publisher: John Wiley and Sons
Year: 2010
Weight: 32 KB
Volume: 28
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.199748040

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✦ Synopsis

Bismuth(III) Chloride or Triflate-Catalyzed Dienophilic Activity of . alpha.-Ethylenic Aldehydes and Ketones.

-BiCl3 and especially Bi(OTf)3 are found to be efficient catalysts for (4 + 2) cycloadditions with α-carbonyl ethylenic dienophiles. They show higher reactivity and selectivity than Sc-, Ti-, Sm-, or Yb-based catalysts. -(GARRIGUES, B.; GONZAGA,

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