1,2-DITHIINS AND PRECURSORS .17. SYNTHESIS AND PROPERTIES OF THIENO ANNELLATED 1,2-DITHIINS - STRUCTURAL INFLUENCE ON COLOR

Authors
SCHROTH W HINTZSCHE E JORDAN H JENDE T SPITZNER R THONDORF I
Citation
W. Schroth et al., 1,2-DITHIINS AND PRECURSORS .17. SYNTHESIS AND PROPERTIES OF THIENO ANNELLATED 1,2-DITHIINS - STRUCTURAL INFLUENCE ON COLOR, Tetrahedron, 53(22), 1997, pp. 7509-7528
Citations number
58
Categorie Soggetti
Chemistry Inorganic & Nuclear
Journal title
Tetrahedron → ACNP
ISSN journal
00404020
Volume
53
Issue
22
Year of publication
1997
Pages
7509 - 7528
Database
ISI
SICI code
0040-4020(1997)53:22<7509:1AP.SA>2.0.ZU;2-X
Abstract
Various thieno[3,2-c] anellated (59, 26) and dithieno[3,2-c:2,3-e] ane llated I,2-dithiins (32 a-c, 45) were obtained starting from appropria te thiophene precursors. The absorption maxima covered the range from 430 to 467 nm indicating olefinic rather than aromatic character of th e anellating thiophene units. Access to the isomeric thieno[2,3-c] ane llated series failed due to competing reactions in the final stage, e. g. by the formation of the 12-membered cyclic bis-disulfide 53. (C) 19 97 Elsevier Science Ltd.