Organic Letters
Nejc Petek, Helena Brodnik, Uroš Grošelj, Jurij Svete, Fran Požgan, Bogdan Štefane
In the present study, we report the photochemical transformation of pyrazolo[1,2-a]pyrazolone substrates that reach an excited state upon irradiation with visible light to initiate the homolytic C–N bond cleavage process that yields the corresponding N1-substituted pyrazoles. Moreover, chemoselective heterolytic C–N bond cleavage is possible in the pyrazolo[1,2-a]pyrazole core in the presence of bromomalonate.
Read article: Org. Lett., 2021, 23, 5294
