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S. S. Laddha and S. P. Bhatnagar, “Efficient Niementowski Synthesis of Novel 1,3,10,12-tetra- substituted-8H-pyrido- [2',3':4,5]pyrimido[6,1-b]quinazolin-8-ones,” Arkivoc, Vol. (xvi), 2007, pp. 1-11.

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.