Synthesis of an ABCD-Type Phthalocyanine by Intramolecular Cyclization Reaction.
Unsymmetrical phthalocyanines with a low symmetry can exhibit unique and intriguing properties that can facilitate their applications in certain disciplines. The synthesis of these compounds, however, has posed a great difficulty. A novel and unprecedented approach for phthalocyanine synthesis is reported that involves intramolecular cyclization of prelinked tetrakisphthalonitriles. By using this strategy, the first ABCD-type phthalocyanine has been prepared in 7.2% yield.
Department of Chemistry, The Chinese University of Hong Kong , Shatin, N.T., Hong Kong, China.
Sun Y S
SY
Chow
Department of Chemistry, The Chinese University of Hong Kong , Shatin, N.T., Hong Kong, China.
Dennis K P
DK
Ng