A new route to trinuclear carbocyanines |
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| Authors: | M Niaz Khan Jean-Pierre Fleury Philippe Baumlin Christian Hubschwerlen |
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| Institution: | Laboratoire de Synthèse et Photochimie Organiques, Laboratoire Associé au CNRS No. 135, Ecole Nationale Supérieure de Chimie, 68093 Mulhouse CedexFrance |
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| Abstract: | Amides or vinylogous amides react with tosyl chloride-pyridine to form activated intermediates which condense with Fischer's base or their vinylogs to give carbocyanine structures. Under the same conditions formylated Fischer's base reacts with vinylogous Fischer's bases to give trinuclear carbocyanines in good yields. Their structure and the limitations of this route are discussed. |
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