European Journal of Organic Chemistry p. 6884 - 6887 (2019)
Update date:2022-08-02
Topics:
Pavithra, Thangavel
Devi, E. Sankari
Nagarajan, Subbiah
Sridharan, Vellaisamy
Maheswari, C. Uma
The efficiency of elemental sulfur for the synthesis of 2H-pyrido[1,2-a]pyrimidin-2-ones has been demonstrated. This strategy involves coupling of 2-aminopyridines and β-oxo esters under neat condition in the absence of external oxidant. The reaction does not require pre-functionalization of the substrates, thus making it an alternate approach for the synthesis of 2H-pyrido[1,2-a]pyrimidin-2-ones. The reaction was tolerant to several substituted 2-aminopyridines and β-oxo esters.
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