Metal-free sequential decarbonylative annulation of N-cyanamides for the construction of 2,3-dihydropyrrolo[2,1-b]quinazolin-9(1H)-ones†
Abstract
A convenient metal-free sequential decarbonylative annulation of unactivated alkenes for the construction of quinazolinones and dihydroisoquinolinones has been developed. This strategy features the oxidative decarbonylation of various secondary and tertiary alkyl aldehydes with N-cyanamide alkenes for the cascade construction of C–C/C–N bonds.