Aerobic Cu(I)‐Catalyzed Site‐Selective 1,3‐Difunctionalization of Indazole through Cascade C−N and C−O Bond Formation
作者:Krishna Kanta Das、Asim Kumar Ghosh、Tamanna Mallick、Naznin Ara Begum、Alakananda Hajra
DOI:10.1002/adsc.202201162
日期:2023.2.7
A Cu(I)-catalyzed 1,3 oxo alkylation of indazole has been developed for constructing N-1-alkylated indazolone derivatives. This cascade reaction involves the formation of C−N and C−O bonds through the sequential functionalization of N1 and C3 positions of indazole in 41–89% yields. The photo-physical studies of the synthesized compounds showed efficient quantum yields with high Stoke shift values.