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Synlett 1992; 1992(6): 495-496
DOI: 10.1055/s-1992-21390
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Efficient Synthesis of Aromatic Ether Dianhydrides

V. Rao Durvasula*
  • *The Dow Chemical Company, Polymer Center B 1470, Freeport, Texas 77541, USA
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Publication Date:
08 March 2002 (online)

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Aromatic ether dianhydrides 2 [e.g., 4,4′-oxybis (1,2-benzenedicarboxylic anhydride)] have been prepared by cobalt(II)-catalyzed autoxidation of tetramethyl aromatic ethers. The use of propionic anhydride/propionic acid was effective to force the reaction to completion.

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