Synthesis of dihydroquinazolines from 2-aminobenzylamine: <i>N</i><sup>3</sup><i>-</i>aryl derivatives with electron-withdrawing groups
作者:Nadia Gruber、Jimena E Díaz、Liliana R Orelli
DOI:10.3762/bjoc.14.227
日期:——
The sequential N-functionalization of 2-aminobenzylamine (2-ABA) followed by cyclodehydration allowed for a straightforward and efficient synthesis of 3,4-dihydroquinazolines with N-aryl substituents bearing electron-withdrawinggroups. The sequence involves an initial SNAr displacement, N-acylation and MW-assisted ring closure. Remarkably, the uncatalyzed N-arylation of 2-ABA led to the monosubstitution