Royal Society of Chemistry, Journal of the Chemical Society, Chemical Communications, 10, p. 872
DOI: 10.1039/c39930000872
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Base-catalysed dehydrohalogenation of a 3,18-bis(2-ohloroethyl)biliverdin 1 affords a novel 3-vinylbiliverdin 3 in which the 2- and 18-positions are bridged with a propano-tether; the structure of 3 has been established using single crystal X-ray and 1H nuclear Overhauser effect studies.