Zwitterionic relatives to the classic [(P-P)Rh(solv)2]+ ions: Neutral catalysts active for H-E bond additions to olefins (E = C, Si, B)

Angewandte Chemie - International Edition

Volumn 42, Issue 21, 2003, Pages 2385-2389

  Betley, Theodore A ^a   Peters, Jonas C ^a  

^a CALIFORNIA INSTITUTE OF TECHNOLOGY   (United States)

Author keywords

Borates; Boron; Hydrogenation; Rhodium; Zwitterions

Indexed keywords

CATALYSIS; CHEMICAL BONDS; HYDROGENATION; POSITIVE IONS;

HYDROSILATION;

ORGANIC COMPOUNDS;

ALKENE; AMPHOLYTE; BORON; CARBON; CATION; PHOSPHORUS; RHODIUM; SILICON;

ACYLATION; ARTICLE; CATALYST; CHEMICAL BOND; CHEMICAL REACTION; HYDROGENATION; HYDROSILYLATION; REACTION ANALYSIS;

EID: 0038343595     PISSN: 14337851     EISSN: None     Source Type: Journal    
DOI: 10.1002/anie.200250378     Document Type: Article

References (25)

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11. For another class of rhodium zwitterions see: a) R. R. Schrock, J. A. Osborn, Inorg. Chem. 1970, 9, 2339; b) Z. Zhou, G. Facey, B. R. James, H. Alper, Organometallics 1996, 15, 2496; c) B. G. Van den Hoven, H. Alper, J. Am. Chem. Soc. 2001, 123, 10214.
12. For another class of rhodium zwitterions see: a) R. R. Schrock, J. A. Osborn, Inorg. Chem. 1970, 9, 2339; b) Z. Zhou, G. Facey, B. R. James, H. Alper, Organometallics 1996, 15, 2496; c) B. G. Van den Hoven, H. Alper, J. Am. Chem. Soc. 2001, 123, 10214.
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16. 2}Rh(nbd)].
17. 2}Rh(nbd)].
18. The Supporting Information contains complete synthetic and characterization data for all new compounds.
19. 6] could be generated, but only in situ as it also proved unstable to a typical workup procedure.
20. R. R. Schrock, J. A. Osborn, J. Am. Chem. Soc. 1976, 98, 4450.
21. 1=0.0425 [I>2σ(I)], GOF=1.192. CCDC-195381 (1a), CCDC-195383 (2), CCDC-195382 (11), CCDC-195384 (14) contain the supplementary crystallographic data for this paper. These data can be obtained free of charge via www.ccdc.cam.ac.uk/conts/retrieving.html (or from the Cambridge Crystallographic Data Centre, 12 Union Road, Cambridge CB21EZ, UK; fax: (+44)1223-336-033; or deposit@ ccdc.cam.ac.uk).
22. 6] was previously reported in ref [4b].
23. 31P NMR spectroscopy in situ during hydrogenation reactions with a 2% catalyst loading.
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