- Carbopalladation of nitriles: Synthesis of 2,3-diarylindenones and polycyclic aromatic ketones by the Pd-catalyzed annulation of alkynes and bicyclic alkenes by 2-iodoarenenitriles
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2-Iodobenzonitrile, its derivatives, and various heterocyclic analogues undergo palladium(O)-catalyzed annulation onto diarylacetylenes or bicyclic alkenes to afford 2,3-diarylindenones and polycyclic aromatic ketones in very good to excellent yields. This reaction represents one of the first examples of the addition of an organopalladium moiety to the carbon-nitrogen triple bond of a nitrile. The reaction is compatible with a number of functional groups. A reaction mechanism, as well as a model accounting for the electronic effects of substituents on the aromatic ring of the nitrile, is proposed.
- Pletnev, Alexandre A.,Tian, Qingping,Larock, Richard C.
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p. 9276 - 9287
(2007/10/03)
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- Magnesiation of indoles with magnesium amide bases
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1-Substituted indole derivatives are deprotonated with Hauser bases (R2NMgBr) or magnesium diamide [(R2N)2-Mg] to give magnesioindoles which are then reacted with electrophiles.
- Kondo, Yoshinori,Yoshida, Akihiro,Sakamoto, Takao
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p. 2331 - 2332
(2007/10/03)
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