CATALYSIS

Cagey hydrosilylation

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Science  19 Feb 2021:
Vol. 371, Issue 6531, pp. 794-795
DOI: 10.1126/science.371.6531.794-b

Platinum-catalyzed hydrosilylation is applied at a vast scale to produce carbon-silicon bonds underlying certain stretchy polymers, lubricants, adhesives, and coatings. Pan et al. report that surrounding the platinum with a molecular cage can boost its activity and enhance its selectivity. Specifically, they used copper ions to template assembly of hexaphenylbenzene-based panels into a porous shell and then swapped out the copper for platinum. The caged catalyst was highly selective toward unencumbered carbon sites and also proved compatible with carbonyl and epoxide functionality.

Nat. Commun. 10.1038/s41467-020-20233-w (2021).

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