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J. Tames, G. Bujtas, K. Horvath-Dora and O. Clauder, “Alkaloids Containing the Indolo [2,3-c]-quinazolino- [3,2-a] Pyridine Skeleton, IV. The Mass Spectra of Rutaecarpine, Evodiamine and 3,14-Dihydrorutaecarpine,” Acta Chimica Academiae Scientiarum Hungaricae, Vol. 89, 1976, pp. 85-89.

has been cited by the following article:

• TITLE: The Synergy of Combined Use of DMSO and Bronsted Acid (Ionic Liquid) as a Catalyst Part I: Efficient Niementowski Synthesis of Modified Quinazolinones

  AUTHORS: Muthu K. Kathiravan, Rajeshwar R. Jalnapurkar, Trupti S. Chitre, Riyaj S. Tamboli, Kumar V. Srinivasan

  KEYWORDS: Ionic Liquids, DMSO, Niementowski

  JOURNAL NAME: Green and Sustainable Chemistry, Vol.1 No.1, February 25, 2011

  ABSTRACT: A new rapid and versatile approach using Ionic liquid/DMSO as a chemical reagent for the synthesis of fused heterocyclic compounds in a highly efficient way is described. This method offers the advantages of proceeding in neutral conditions, giving high to excellent isolated yields (83–92%) for Niementowski synthesis with easy workup procedure. The inherent Bronsted acidity of ionic liquid and high polarity of both IL and DMSO resulted in a significant enhancement in the reaction rate.