RSS-Feed abonnieren
Bitte kopieren Sie die angezeigte URL und fügen sie dann in Ihren RSS-Reader ein.
https://www.thieme-connect.de/rss/thieme/de/10.1055-s-00000084.xml
Synthesis 2008(20): 3279-3288
DOI: 10.1055/s-0028-1083165
DOI: 10.1055/s-0028-1083165
PAPER
© Georg Thieme Verlag
Stuttgart ˙ New York
gem-Dimethylcyclopropanation Using Triisopropylsulfoxonium Tetrafluoroborate: Scope and Limitations
Weitere Informationen
Publikationsverlauf
Received
13 June 2008
Publikationsdatum:
25. September 2008 (online)


Abstract
A new nucleophilic isopropyl transfer reagent, triisopropylsulfoxonium tetrafluoroborate, has been prepared and evaluated. Thus, using this reagent and NaH in DMF, a range of electron deficient alkenes, including several chalcone analogues, α,β-unsaturated ketones, dienones and quinones, plus α,β-unsaturated esters, nitrile, sulfone and nitro examples, have been converted into the corresponding gem-dimethylcyclopropane compounds.
Key words
cyclopropanes - cyclopropanation - sulfoxonium salts - ruthenium tetraoxide