Polyphenylene-Based Solid Acid as an Efficient Catalyst for Activation and Hydration of Alkynes.

ABSTRACT: Porous polymer catalysts possess the potential to combine the advantages of heterogeneous and homogeneous catalysis, namely, easy postreaction recycling and high dispersion of active sites. Here, we designed a -SO₃H functionalized polyphenylene (PPhen) framework with purely sp²-hybridized carbons, which exhibited high activity in the hydration of alkynes including challenging aliphatic substrates such as 1-octyne. The superiority of the structure lies in its covalent crosslink in the xy-plane with a π-π stacking interaction between the planes, enabling simultaneously high swellability and porosity (653 m²·g^-1). High acidic site density (2.12 mmol·g^-1) was achieved under a mild sulfonation condition. Similar turnover frequencies

SUBMITTER: Liu Y 

PROVIDER: S-EPMC7304856 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature