Functionalization of Single-Wall Carbon Nanotubes by Tandem High-Pressure/Cr(CO)<sub>6</sub> Activation of Diels−Alder Cycloaddition

An original method to induce Diels−Alder cycloadditions on carbon nanotubes is reported. The process is based on the double activation of the nanotube surface by combining high pressure and Cr(CO)<sub>6</sub>. This allows the efficient functionalization of carbon nanotubes by electron-rich dienes.