Iridium-Catalyzed C–H Amination/Cyclization for Medium to Large <i>N</i>-Heterocycle-Fused Dihydroquinazolinones
作者:Tao Zhang、Xunqing Dong、Hitesh B. Jalani、Jiaqi Zou、Guigen Li、Hongjian Lu
DOI:10.1021/acs.orglett.9b01167
日期:2019.5.17
A practical iridium-catalyzed cascade/stepwise synthesis of dihydroquinazolinones (DHQs) and bis-DHQs fused to medium to large N-heterocyclic rings is developed. The reaction undergoes benzamide-directed intermolecular C–H amination with an aldehyde-tethered alkyl azide, and then the newly installed amino group undergoes intramolecular cyclization with a remote aldehyde group present in azide and amidyl
Copper-catalyzed N-arylation and aerobic oxidation: one-pot synthesis of tetrahydroisoquinolino[2,1-a]quinazolinone derivatives
作者:Hua Tian、Hongwei Qiao、Changjin Zhu、Hua Fu
DOI:10.1039/c3ra44975k
日期:——
An efficient and practical copper-catalyzed one-pot method for synthesis of tetrahydroisoquinolino[2,1-a]quinazolinone derivatives has been developed, and the corresponding target products were prepared in moderate to good yields. The one-pot approach underwent sequential copper-catalyzed N-arylation, intramolecular aerobic oxidative cyclization, and the newly synthesized products provided diverse structures for screening of biological molecules.