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Synthesis 1986; 1986(12): 1061-1062
DOI: 10.1055/s-1986-31877
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A Novel and Convenient Synthesis of Substituted Coumarins

Alok K. Awasthi* , Ram S. Tewari
  • *Department of Chemistry, H. B. Technological Institute, Kanpur-208 002 (U. P.), India
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Publication Date:
12 September 2002 (online)

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Substituted coumarins have been synthesized by the annelation of 2-hydroxyphenyl aldehydes and ketones with carboxylic acids using N,N-dimethyl(dichlorophosphoryloxymethylene)ammonium chloride as phosphorylating agent.