ABSTRACT A novel, metal‐ and photocatalyst‐free strategy has been developed for the visible‐light synthesis of quinazolin‐4(3H)‐ones from 2‐amidoaryl oxazolines, with phenanthroline serving as a crucial promoter. The strategy highlights the potential of using readily available organic molecules to construct complex heterocycles under mild conditions. This approach offers a sustainable and operationally simple protocol, avoiding the need for costly metals or specialized photoactive catalysts. Importantly, the resulting quinazolin‐4(3 H )‐ones have been successfully applied in a rapid‐readout system, demonstrating their utility for fast and convenient detection.
Chen et al. (2026) studied this question.