The first set of rhodium(I) complexes 1-3 has been shown to be active for the cyclopropanation of olefins with diazoacetates.
Cyclopropanation reactions catalysed by ruthenium complexes with new anionic phosphine ligands
✍ Scribed by A. Demonceau; F. Simal; A.F. Noels; C. Viñas; R. Nuñez; F. Teixidor
- Publisher
- Elsevier Science
- Year
- 1997
- Tongue
- French
- Weight
- 362 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0040-4039
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✦ Synopsis
Novel ruthenium complexes with anionic phosphine ligands were found to be efficient in the catalytic cyclopropanation reaction of olefins with ethyl diazoacetate.
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Ruthenium-arene complexes containing phosphines with pendent aryl groups [RuCI2(rl6-p-cymene) -(PCy2(CH2)3Ar)], Ar = C6H5 and 3,5-(CH3)2-C6H 3 (1 and 3), and the resulting chelating complexes [RuC12(PCy2-(CH2)3-'q6-Ar)] (2 and 4) mediate the cyclopropanation of olefins with ethyl diazoacetate. Compa