Zhang Y, Yang X, Li L, Hu Y, Wang S. One-step assembly of a MacMillan catalyst-based phenolic-type polymer.
Org Biomol Chem 2023;
21:4465-4472. [PMID:
37191132 DOI:
10.1039/d3ob00624g]
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Abstract
We report herein a "bottom-up" approach for the one-step assembly of a MacMillan catalyst-based phenolic-type polymer (Mac-CP). The resulting self-supported polymeric organocatalyst possesses homogeneously distributed and highly concentrated catalytic sites. Furthermore, Mac-CP is soluble in CH3CN but insoluble in hexane. This unique property can be used to employ the polymer as an efficient catalyst in homogeneous organocatalysis and heterogeneous recycling. As a result, Mac-CP possesses comparable catalytic activity and enantioselectivity to its homogeneous counterpart in the asymmetric Diels-Alder reaction (95% yield, 93% enantiomeric excess (ee) for endo and 92% ee for exo).
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