Clean and efficient microwave assissted solid phase cyclocondensation of various substituted phthalic anhydrides, phthalic acids, phthalimide and phthalonitrile with urea in the presence of basic alumina forms free-base phthalocyanines in 15-79% yields with and without ammonium molybdate as a catalyst. Copyright (C) 2003 Society of Porphyrins & Phthalocyanines.
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Univ Kiel, Otto Diels Inst Organ Chem, Otto Hahn Pl 4, D-24118 Kiel, GermanyUniv Kiel, Otto Diels Inst Organ Chem, Otto Hahn Pl 4, D-24118 Kiel, Germany
Moormann, Widukind
Langbehn, Daniel
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Univ Kiel, Otto Diels Inst Organ Chem, Otto Hahn Pl 4, D-24118 Kiel, GermanyUniv Kiel, Otto Diels Inst Organ Chem, Otto Hahn Pl 4, D-24118 Kiel, Germany
Langbehn, Daniel
Herges, Rainer
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Univ Kiel, Otto Diels Inst Organ Chem, Otto Hahn Pl 4, D-24118 Kiel, GermanyUniv Kiel, Otto Diels Inst Organ Chem, Otto Hahn Pl 4, D-24118 Kiel, Germany