β-Imino-meso-tetraphenylporphyrin Derivatives in Hetero-Diels−Alder Reactions

摘要: Two types of β-imino-meso-tetraphenylporphyrin derivatives were used as heterodienes in Diels−Alder reactions with electron-rich dienophiles. These catalysed by lanthanum triflate. Depending on the starting imine derivative, products these are pyrido[2,3-b]porphyrins or β-tetrahydroquinoline-substituted porphyrins. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2004)