Intermolecular insertion reaction of a carbene, catalyzed by Rh<sub>2</sub>(S-DOSP)<sub>4</sub> (Tetrakis[(S)-(-)-N-(p-dodecylphenylsulfonyl)prolinato]dirhodium(II))
<a href="//commons.wikimedia.org/wiki/User:Hbf878" title="User:Hbf878">Hbf878</a>
<span class="int-own-work" lang="en">Own work</span>