Published in
Elsevier, Tetrahedron Letters, 21(50), p. 2566-2569
DOI: 10.1016/j.tetlet.2009.03.097
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Allenylporphyrins: a new motif on the porphyrin periphery
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Abstract
Palladium-catalysed Suzuki–Miyaura cross-coupling proved to be the simplest and most efficient method for attaching an unsubstituted allene, a novel substituent and potential functional group, to the porphyrin periphery. Comparative studies on various allenyl synthetic pathways show that this method, which makes use of a bromoporphyrin and allenylboronate, affords the corresponding allenylporphyrin in the presence of an appropriate base and THF. ; PUBLISHED