Leicht verfügbare Edukte, hohe Selektivität – dies sind die attraktiven Merkmale der Titelreaktion. Bromid-, Acetat- und tert-Butylcarbonat-Derivate von durch eine Morita-Baylis-Hillman-Reaktion erhaltenen Addukten reagieren mit PPh3 zu Allylyliden. Die phosphankatalysierte Anellierung der Ylide mit elektronenarmen Alkenen ergibt stereoselektiv funktionalisierte Cyclopentene [Gl. (1)]. X=Br, OAc, OBoc; E=CO2Et. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2001/2003/z50449_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.
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Du et al. (2003) studied this question.
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