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Synthesis 1990; 1990(11): 1062-1065
DOI: 10.1055/s-1990-27094
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An Efficient Route to Dipyrrinones: Synthesis of Xanthobilirubic Acid Methyl Ester

David P. Shrout* , David A. Lightner
  • *Department of Chemistry, University of Nevada, Reno, NV 89557-0020, USA
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Publication Date:
17 September 2002 (online)

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Structually interesting and complicated dipyrrinones, such as xanthobilirubic acid methyl ester (9), can be synthesized on a large scale from simple, inexpensive starting materials like ethyl acetoacetate, 2,4-pentanedione (1) and ethyl acrylate in 8 steps with an average yield of 80% at each step and an overall 17% yield.