Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5263131 | Tetrahedron Letters | 2013 | 4 Pages |
Abstract
Fluorination of quadruply bicyclo[2.2.2]octadiene-fused porphyrin (CP) with 1-chloromethyl-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane bis(tetrafluoroborate) (Selectfluor) occurred at the meso positions to give a mixture of various meso-fluorinated CPs, which were separated and then quantitatively transformed to the corresponding meso-fluorinated tetrafluorobenzoporphyrins (BPs) at 240 °C for 30 min. X-ray analysis of the mono-fluoro BPs revealed that the BP skeleton remained flat, which is crucial for retaining aggregation behavior similar to that of the parent BP, thus producing highly crystalline BP derivatives.
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Authors
Satoshi Ito, Noriaki Terada, Komei Seino, Daishi Makihata, Akira Sasaki, Toru Oba,