In the organocatalytic Diels–Alder (DA) reactions, a simple amine is used as a catalyst to form an iminium adduct as an electron-withdrawing group that speeds up reaction with the diene.

Mar. 26, 2025 — Researchers have developed a molecular system for controlled release of iron. They integrated ferrocene, a molecular sandwich that encloses an iron atom, with a carbon 'nanohoop ...

Mar. 24, 2025 — Engineers devised a way to deliver drugs such as contraceptives by injecting them as suspended crystals. Once under the skin, the crystals assemble into a drug depot that can ...

Competing side reactions, particularly hydrogen evolution ... After controlled heat treatment under nitrogen, they performed ammonia thermal treatment, which selectively removed nitrogen atoms ...