Recent advances in the chemistry of pyrazolo[1,5-a]pyrimidines

Microwave-assisted synthesis and functionalization of 2-arylimidazo[1,2-a]pyrimidin-5(8H)-ones

“…2 and Table 2). 7,8 This study was conducted to classify compounds 6a-o as strategic intermediates of novel functional uorophores due to their high synthetic viability. In particular, 6i was chosen for the research since its aryl group (i.e., 4-MeOPh) has revealed exceptional photophysical results in a similar 5 : 6 heterocyclic core, namely the pyrazolo[1,5-a]pyrimidine ring, by intramolecular charge transfer (ICT) photophysical phenomena.…”

“…1a). [6][7][8][9][10] Although there are many works on imidazo[1,2-a]pyrimidine-ring-based compounds, this scaffold is part of diazolopyrimidines with minor applicability with few commercial compounds containing it. Thus, studying this type of compound is valuable since it has high and proven photophysical [9][10][11] and biological potential [12][13][14][15][16][17][18][19][20][21] (Fig.…”