Proof of a reversible, pairwise hydrogen transfer during the homogeneously rhodium(I)-catalyzed hydrogenation of β,β-unsaturated carbonic acid derivatives with in situ NMR spectroscopy and parahydrogen

Angewandte Chemie (International Edition in English)

Volumn 35, Issue 21, 1996, Pages 2505-2507

  Harthun, Andreas ^a   Selke, Rüdiger ^b   Bargon, Joachim ^a  

^a UNIVERSITY OF BONN   (Germany)

^b UNIVERSITY OF ROSTOCK   (Germany)

Author keywords

Deuteration; NMR spectroscopy; Parahydrogen; Reaction mechanisms

Indexed keywords

EID: 0030445706     PISSN: 05700833     EISSN: None     Source Type: Journal    
DOI: 10.1002/anie.199625051     Document Type: Article

References (14)

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2. A. Thomas, M. Haake, F.-W. Grevels, J. Bargon, Angew. Chem. 1994, 106, 820-822; Angew. Chem. Int. Ed. Engl. 1994, 33, 755-757; A. Harthun, K. Woelk, A. Weigt, J. Bargon, Tetrahedron 1995, 51, 11199-11206, and references therein.
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8. The simulations were performed by using the computer program PHIP + + developed by T. Greve, Bonn.
9. H. Günther, NMR-Spektroskopie, 3rd ed., Thieme, Stuttgart, 1992, 438.
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14. After this study had been completed and these results submitted, we became aware of a concept similar to ours D. J. Hardick, I. S. Blagbrough, and B. V. L. Potter (J. Am. Chem. Soc. 1996, 118, 5897-5903), which postulates reversibility of the hydrogenation step as well. However, their results do not prove that the hydrogen transfer occurs pairwise.