Oliver B. Locos, Katja Dahms and Mathias O. Senge, Allenylporphyrins: a new motif on the porphyrin periphery, Tetrahedron Letters, 50, 21, 2009, 2566 - 2569
Tetrahedron Letters 50 21
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.
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