Synthesis of <i>N</i>-Confused Porphyrin Analogues by β-Azafulvenone Tetramerization
作者:Greg GuangHua Qiao、Ming Wah Wong、Curt Wentrup
DOI:10.1021/jo9609438
日期:1996.11.15
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.