Oxetanes and other four-sided molecular rings have become increasingly common in drug design thanks to their small size and ...

Photochemistry provides a pathway to swap the oxygen atom in oxetane rings with nitrogen, carbon or sulfur at a single stroke ...

Researchers from NUS have pioneered a photocatalytic atom-swapping transformation that converts oxetanes into a variety of four-membered saturated cyclic molecules, which are key scaffolds in ...