Niementowski quinazoline synthesis

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Niementowski quinazoline synthesis
Named after Stefan Niementowski
Reaction type Ring forming reaction

The Niementowski quinazoline synthesis is the chemical reaction of anthranilic acids with amides to form 4-oxo-3,4-dihydroquinazolines (3H-quinazolin-4-ones).[1][2][3]

The Niementowski quinazoline synthesis


Research has demonstrated that the Niementowski quinazoline synthesis could be employed for the creation of potential EGFR-inhibiting molecules. Hensbergen et al.[1] have shown a synthetic route to a new class of privileged tri- and tetra-cyclic quinazolines containing a medium-sized ring.


A nucleophilic aromatic substitution is combined with the Niementowski reaction and a BOP-mediated ring closure to afford several analogues.


  1. ^ Hensbergen, Albertus Wijnand; Mills, Vanessa R.; Collins, Ian; Jones, Alan M. (18 November 2015). "An expedient synthesis of oxazepino and oxazocino quinazolines". Tetrahedron Letters. doi:10.1016/j.tetlet.2015.10.008. 
  1. ^ Niementowski, Stefan (1895). "Synthesen von Chinazolinverbindungen". J. Prakt. Chem. 51: 564. 
  2. ^ Williamson, T. A. (1957). "The chemistry of quinazoline". Heterocyclic Compounds. 6: 331. 
  3. ^ Cuny, Eckehard; Lichtenthaler, F.W.; Moser, Alfred (1980). "Benzologs of allopurinol: Synthesis of pyrazolo [4,3-g] and [3,4-f] quinazolinones". Tetrahedron Lett. 21 (32): 3029. doi:10.1016/S0040-4039(00)77398-9.