title: Synthesis of N-Confused Porphyrin Analogues by beta-Azafulvenone Tetramerization.
abstract: beta-Azafulvenones 16 and 33 were generated from 14 or 18 and 31 or 37, respectively, and directly observed by IR spectroscopy. These heterocyclic ketenes tetramerize to the macrocycles 20 and 34.
authors.affiliation: Department of Chemistry, The University of Queensland, Brisbane, Queensland 4072, Australia.
authors.forename: Greg GuangHua
authors.initials: GG
authors.lastname: Qiao
authors.forename: Ming Wah
authors.initials: MW
authors.lastname: Wong
authors.forename: Curt
authors.initials: C
authors.lastname: Wentrup