Base-Controlled Selectivity in the Synthesis of Linear and Angular Fused Quinazolinones by a Palladium-Catalyzed Carbonylation/Nucleophilic Aromatic Substitution Sequence
A new approach for the facile synthesis of fused quinazolinone scaffolds through a palladium‐catalyzed carbonylative coupling followed by an intramolecular nucleophilic aromatic substitution is described. The base serves as the key modulator: Whereas DBU gives rise to the linear isomers, Et3N promotes the preferential formation of angular products. Interestingly, a light‐induced 4+4 reaction of the
Oxidative Synthesis of Quinazolinones under Metal-free Conditions
作者:Jian-Bo Feng、Xiao-Feng Wu
DOI:10.1002/jhet.2562
日期:2017.1
A metal‐free procedure for the synthesis of quinazolinones underoxidativeconditions has been developed. In the presence of DABCO and TBHP, the desired products can be obtained in moderate yields with 2‐fluorobenzaldehydes and 2‐aminopyridines as the substrates.