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Synlett 1992; 1992(10): 795-796
DOI: 10.1055/s-1992-21493
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Fischer Cyclizations by Microwave Heating

Rudolph A. Abramovitch* , Amanda Bulman
  • *Department of Chemistry, Clemson University, Clemson, SC 29634-1905, USA
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Publication Date:
08 March 2002 (online)

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Phenylhydrazones, including p-nitrophenylhydrazones, may be cyclized readily to the corresponding indoles using 96% formic acid under microwave irradiation. On the other hand, irradiation in the presence of Montmorillonite KSF gives mainly unreacted hydrazones.

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