Olefin Cyclopropanation Catalyzed by Bis(imido) Chromium(VI) Complexes. -The cyclopropanation of activated and unactivated olefins with ethyl diazoacetate in the presence of catalytic bis(imido) chromium(VI) complexes is investigated. Cycloolefins and non-activated terminal linear olefins are foun
Olefin cyclopropanation catalysed by bis(imido) chromium(VI) complexes
✍ Scribed by Dominique Jan; François Simal; Albert Demonceau; Alfred F. Noels; Konstantin A. Rufanov; Nikolai A. Ustynyuk; Dmitry N. Gourevitch
- Publisher
- Elsevier Science
- Year
- 1999
- Tongue
- French
- Weight
- 282 KB
- Volume
- 40
- Category
- Article
- ISSN
- 0040-4039
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✦ Synopsis
Bis(imido) chromium(VI) complexes are efficient catalysts for promoting the cyclopropanation of activated monosubstituted olefins with ethyl diazoacetate. 2,2'-Disubstituted activated olefins and non-activated ~-and cyclo-olefins, however, are much less reactive.
📜 SIMILAR VOLUMES
Ruthenium complexes of the type [RuX(Cp%)(PPh 3 ) 2 ] (X=Cl and H; Cp%=Cp, Cp\*, indenyl, and carboranyl) efficiently catalyse olefin cyclopropanation with diazoesters, and the cis/trans stereoselectivity of the resulting cyclopropanes strongly depends on the Cp% ligand. With [RuCl(Cp\*)(PAr 3 ) 2 ]
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