Light‑Driven Copper Trick Makes Fancy Sulfur Molecules
Chemists have devised a novel method that uses light and copper to attach sulfur atoms to simple hydrocarbons.
Instead of the conventional approach, the new technique links a sulfur atom directly to an existing carbon in the hydrocarbon.
How It Works
Copper Catalyst + Light
The copper catalyst, energized by light, pulls electrons from the hydrocarbon substrate.Outer‑Sphere S–H₂ Step
The reaction is orchestrated outside the immediate reach of copper, creating an outer‑sphere pathway.Single‑Step Hopping
Computer models reveal that the sulfur atom hops onto the carbon in a clean, single motion.
Advantages
- Room‑Temperature Operation – No harsh conditions are required.
- High Purity & Yield – Produces chiral sulfilimines in large quantities.
- Sustainable Feedstocks – Everyday fuels such as propane or butane can serve as starting materials.
Impact
The technique offers a cost‑effective, ecofriendly route to chiral sulfilimines, potentially benefiting pharmaceutical development and materials science.
Additionally, it provides a new tool for probing chirality generation in sulfur chemistry.
