A variety of 1-alkyl- and aryl-substituted indazolones were synthesized easily starting from commercially available 2-halobenzoic acids and hydrazines via the copper-catalyzed intramolecular C-N bond formation of 2-halobenzohydrazides under mild conditions.
Rh(iii)-catalyzed [4 + 1] annulation of 1-arylindazolones with alkynyl cyclobutanols: access to indazolo[1,2-a]indazolones
作者:Jiang Hu、Jidan Liu、Wenwen Cui、Liyao Zheng、Renjie Wang、Zhao-Qing Liu、Shouzhi Pu
DOI:10.1039/d4ob01067a
日期:——
A convenient and efficient synthesis of structurally diverse indazolo[1,2-a]indazolones via a Rh(iii)-catalyzed [4 + 1] annulation of 1-arylindazolones with alkynyl cyclobutanols has been achieved by combining C–H and C–C bond cleavage.