Pyridine analogs of tetraarenoporphins

Template tetramerization of quinolinic and cinchomeronic acid imides or their mixtures with the infides of 4-tertbutylphthalic and I-phenylnaphtalene-2,3-dicarboxyclic acids gave the following pyridino zinc complex analogs of the arenoporphins: tetra-2, 3-pyridino- and -3,4-pyridinopoiphins, tri-2,3-(I-phetyliiaphtlio)-2,3-pyridino-and -3,4-pyridinapoiphins, and tri(4-tertbutylbenzo)-3,4-pyridinoporphin. The desmetal derivatives were obtained for several of these. The electronic absorption spectra are discussed.