Organic Letters 2010-05-21

2H-Azirines from a concerted addition of alkylcarbenes to nitrile groups.

Wolfgang Knoll, Jean-Luc Mieusset, Vladimir B Arion, Lothar Brecker, Udo H Brinker

Index: Org. Lett. 12(10) , 2366-9, (2010)

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Abstract

Photolysis of aziadamantanes in the presence of fumaronitrile (FN) unexpectedly afforded conjugated 2H-azirines resulting from addition of the carbene to the CN triple bond. This represents the first example of a direct azirine formation starting from an alkylcarbene for which a concerted pathway is postulated. The novel outcome of the reaction is favored by the prior formation of a carbene-alkene complex, a type of adduct that only recently has been described.

Related Compounds

  • Fumaronitrile

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