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Synlett 1994; 1994(11): 939-940
DOI: 10.1055/s-1994-23056
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A convenient, one-pot synthesis of 1,9-dicyano-dipyrromethanes and a difurylmethane

Ross W. Boyle* , Veranja Karunaratne, Ayub Jasat, Eduardo K. Mar, David Dolphin
  • *Department of Chemistry, 2036 Main Mall, University of British Columbia, Vancouver, B.C., Canada V6T 1Z1
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Publication Date:
22 March 2002 (online)

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A range of 1,9-dicyano-dipyrromethanes were prepared from 1,9-dicarboxy- or 1,9-diunsubstituted-dipyrromethanes by decarboxylation (of the acids) and treatment with chlorosulfurylisocyanate in DMF; a dicyanodifurylmethane was prepared similarly. These 1,9-dicyano derivatives are important as precursors to "expanded" porphyrin-like macrocycles.

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