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標題: Unexpected formation of porphyrinic enyne under Sonogashira conditions
作者: Chen, Y.J.
Lee, G.H.
Peng, S.M.
Yeh, C.Y.
關鍵字: acetylenes;cross-coupling;enynes;porphyrins;photoinduced electron-transfer;terminal alkynes;zinc porphyrin;multiporphyrin arrays;dimers;oligomerization;spectroscopy;dimerization;additions;systems
Project: Tetrahedron Letters
期刊/報告no:: Tetrahedron Letters, Volume 46, Issue 9, Page(s) 1541-1544.
Reaction of 5-iodo-10,15,20-tris(3,5-di-tert-butylphenyl)porphyrin with excess trimethylsilylacetylene under Sonogashira conditions gives an unexpected porphyrinic enyne suitable for further transformations. The NMR spectrum and structural analysis of the porphyrin enynes show that the substituent on the acetylene group is positioned above the porphyrin ring. This structural characteristic makes the microenvironment of the porphyrin center in a controllable fashion. (C) 2005 Elsevier Ltd. All rights reserved.
ISSN: 0040-4039
DOI: 10.1016/j.tetlet.2004.12.126
Appears in Collections:化學系所

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