Syntheses of monometalated and unsymmetrically substituted binuclear phthalocyanines and a pentanuclear phthalocyanine by solution and polymer support methods

: Binuclear phthalocyanines in which two different phthalocyanine nuclei are covalently linked through five-atom bridges, derived from 2-ethyl-2- methylpropan-1,3-diol are prepared. In the examples, one phthalocyanine ring is always substituted with neopentoxy substituents, while the other phthalocyanine ring is unsubstituted or contains a tert-butyl substituents or a neopentoxy substituted copper phthalocyanine, constituting a biculear phthalocyanine in which only one ring is metallated. The precursor, 2-(2-hydroxymethyl-2- methylbutoxy)-9,16,23-trineopentoxyphthalocyanine41 was prepared in solution and also by solid phase methods, using polymer-bound trityl chloride derived from a 1% divinylbenzene-co-styrene co-polymer. Keywords: Phthalocyanine, Binuclear, Pentanuclear, Polymer support.