Bernard Boitrel, Evelyne Camilleri, Yves Fléché, Lecas Alexandra, Eric Rose. Assignments of the chemical shifts of meso-phenyl protons and carbons of tetrakis-5,10,15,20 (a,b,a,b-ortho-amidophenyl)porphyrins.
Tetrahedron Letters, Elsevier, 1989, 30 (22), pp.2923-2926.
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