FORMATION OF 1-(2-AMINOPHЕNYL)-5-ETHOХY-4-METHYL-3-PНЕNYLPYRAZOLE AND 3-METHYL-2-PHENYLPYRАZOLO[5,1-<i>b</i>]BENZIMIDAZOLE <i>VIA</i> AN UNUSUAL BENZOTRIAZOLE RING OPENING

Authors

  • Alan R. Katritzky Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, Florida 32611-720
  • Zuoquan Wang Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, Florida 32611-720
  • Hengyuan Lang Center for Heterocyclic Compounds, Department of Chemistry, University of Florida, Gainesville, Florida 32611-720
  • Peter J. Steel Department of Chemistry, University of Canterbury, Christchurch

Abstract

Successive treatment of N-[(1-еthоху)аlkеn-2-уljbепzоtгiаzоlеs with butyllithium and trimethylchlorosilane in THP at ‒78 °C followed by refluxing in acidic acetone generated ring-opened 1-(2- аminорhеnуl)-5-еthоху-4-mеthуl-3-рhеnуlругаzоlе (VIII) and 3-methyl-2-phenylpyrazolo[5,1-b]benzimidazole (IX).

How to Cite
Katritzky, A. R.; Wang, Z.; Lang, H.; Steel, P. J. Chem. Heterocycl. Compd. 1996, 32, 666. [Khim. Geterotsikl. Soedin. 1996, 775.]

For this article in the English edition, see DOI https://doi.org/10.1007/BF01164865

Downloads

Published

1996-06-25

Issue

No. 6 (1996)

Section

Original Papers