Efficient Synthesis of Transition-Metal Phthalocyanines in Functional Ionic Liquids

Authors:
  • SCS. M. S. Chauhan
    S. M. S. Chauhan
  • PKPratibha Kumari
    Pratibha Kumari
  • SAShweta Agarwal
    Shweta Agarwal
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Abstract
The synthesis of transition-metal phthalocyanines by the reaction of substituted and unsubstituted phthalonitriles in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) and metal salts in functional imidazolium, pyridinium and ammonium ionic liquids at 100-140 °C, is reported. The best yields of metallated phthalocyanines were achieved in butyl(2-hydroxyethyl)dimethylammonium bromide ionic liquid. Metallation of free-base phthalocyanines with different metal salts in the above ionic liquid has also been achieved in good yields.