Synthesis of a Tetraazulene Porphodimethene Analogue
摘要:
Substituted calix[4]azulenes were prepared by reacting 6-alkylazulenes with paraformaldehyde in the presence of florisil. Hydride abstraction of a calix[4]azulene with Ph3CPF6 afforded a tetraazulene analogue of the porphodimethenes.