Ru-centered coordination complexes as a new phase transfer catalyst for aikylation of enolates and Michael additions

Tetrahedron Letters

Volumn 40, Issue 19, 1999, Pages 3685-3688

  Tzalis, Dimitrios ^a   Knochel, Paul ^a,b  

^a Fachbereich Chem der Phillips UM   (Germany)

^b UNIVERSITY OF MUNICH   (Germany)

Author keywords

[No Author keywords available]

Indexed keywords

COORDINATION COMPOUND;

ALKYLATION; AMINO ACID METABOLISM; ARTICLE; CATALYST; CHIRALITY; DRUG SYNTHESIS; MICHAELIS CONSTANT; PHASE TRANSITION; REACTION ANALYSIS;

EID: 0033532005     PISSN: 00404039     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0040-4039(99)00587-0     Document Type: Article

References (16)

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3. [2] For the recent use of a phosphonium catalyst in the Heck-reaction see: Reetz, M. T.; Lohmer, G.;Schwickardi, R. Angew. Chem. 1998, 110, 492-494; Angew. Chem. Int. Ed. Engl. 1998, 37, 481-483.
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12. [4] For the preparation of optically pure tris(polypyridyl)ruthenium(II) complexes, see: Tzalis, D.; Tor, Y. J. Am. Chem. Soc. 1997, 119, 852-853. For analytical applications of these complexes, see:Lacour, G.; Torche-Haldimann, S.; Jodry, J. J.; Ginglinger, C.; Fawarger, F. Chem. Commun.1998, 1733-1734.
13. [4] For the preparation of optically pure tris(polypyridyl)ruthenium(II) complexes, see: Tzalis, D.;Tor, Y. J. Am. Chem. Soc. 1997, 119, 852-853. For analytical applications of these complexes, see: Lacour, G.; Torche-Haldimann, S.; Jodry, J. J.; Ginglinger, C.; Fawarger, F. Chem. Commun. 1998, 1733-1734.
14. [5] Tzalis, D.; Tor, Y.; Failla, S.; Siegel, J. S. Tetrahedron Lett. 1995, 36, 3489.
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16. 6 solution to yield 121 mg of a orange solid (87 % yield). 1 was reused for the synthesis of 5a as described above with the same reaction time and similar yield (79 % yield).