Cannabaceae

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
The Niementowski quinazoline synthesis

Uses

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Research has demonstrated that the Niementowski quinazoline synthesis could be employed for the creation of potential EGFR-inhibiting molecules. Hensbergen et al.[4] 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.

References

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  1. ^ Von Niementowski, Stefan (1895). "Synthesen von Chinazolinverbindungen". J. Prakt. Chem. (in German). 51 (1): 564–572. doi:10.1002/prac.18950510150.
  2. ^ Williamson, T. A. (1957). "The chemistry of quinazoline". In Elderfield, R. C. (ed.). Heterocyclic Compounds. Vol. 6. New York: John Wiley & Sons. pp. 324–376.
  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): 3029–3032. doi:10.1016/S0040-4039(00)77398-9.
  4. ^ Hensbergen, Albertus Wijnand; Mills, Vanessa R.; Collins, Ian; Jones, Alan M. (2015). "An expedient synthesis of oxazepino and oxazocino quinazolines" (PDF). Tetrahedron Lett. 56 (46): 6478–6483. doi:10.1016/j.tetlet.2015.10.008.

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  1. Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
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