A new approach to symmetric 2,2':6',2'-terpyridines

Tetrahedron

Volumn 54, Issue 11, 1998, Pages 2365-2370

  Adrían Jr , James C ^a   Hassib, Lamyaa ^a   De Kimpe, Norbert ^b   Keppens, Marian ^b  

^a UNION COLLEGE   (United States)

^b GHENT UNIVERSITY   (Belgium)

Author keywords

[No Author keywords available]

Indexed keywords

LIGAND; PYRIDINE DERIVATIVE; TERPYRIDINE; UNCLASSIFIED DRUG;

ARTICLE; CHEMICAL STRUCTURE; PRECURSOR; PRIORITY JOURNAL; SYNTHESIS;

EID: 0032510456     PISSN: 00404020     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0040-4020(98)00005-2     Document Type: Article

References (19)

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17. 6. The 5,5″-dimethylterpyridine, 1b, was recently reported by Hasenknopf and Lehn (ref. 1e) and by Cárdenas and Sauvage (ref. 3c). Hasenknopf and Lehn prepared 1b by the method of Jameson (ref. 3d), a 1,5-enedione condensation, in a 35% yield for the final condensation step. Cárdenas and Sauvage prepared 1b via a Stille cross-coupling reaction in a 64% overall yield.
18. 7. R.-A. Fallahpour and E. C. Constable have recently reported a preparation of symmetric terpyridines starting from chelidamic acid which is converted the 2,6-diactylpyridine derivative. The termninal rings, with substituents at the C(4), C(5) and/or C(6) positions are then constructed via a Kröhnke synthesis in 45-60% yields from the diactylpyridines. J. Chem. Soc., Perkin Trans. 1 1997, 2263-2264.
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