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Synthesis 1987; 1987(2): 197-199
DOI: 10.1055/s-1987-27890
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Conversion of 1,4-Dihydrobenzoic Acids to Polyformylbenzenes under Vilsmeier Reaction Conditions

B. Raju* , G. S. Krishna Rao
  • *Department of Organic Chemistry, Indian Institute of Science, Bangalore 560 012, India
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Publication Date:
12 September 2002 (online)

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1,4-Dihydrobenzoic acids 1a-e are converted by a one-pot reaction to benzene- mono-, di- and tricarboxaldehydes under Vilsmeier reaction conditions in yields ranging from 6 to 65%. The same methodology also serves to give naphthalene-1,3-dicarboxaldehyde (2f) from 1,4-dihydro-1-naphthoic acid (1f) in 91% yield.