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DOI: 10.1055/s-0042-1752629
Semi-Hydrogenation of Alkynes and Suzuki Coupling with a Polyurethane Foam-Supported Pd Catalyst
Pd-Functionalized Polydopamine-Coated Polyurethane Foam: A Readily Prepared and Highly Reusable Structured Catalyst for Selective Alkyne Semi-Hydrogenation and Suzuki Coupling under Air.
Green Chem. 2023;
25: 264-279
DOI: 10.1039/d2gc03283j.
Significance
A novel polymeric Pd catalyst, Pd-functionalized polydopamine-coated polyurethane foam (Pd@PDA@PUF), was readily prepared from polyurethane (PUF) through immersing-rinsing processes with dopamine and PdCl2(NH3)4. Pd@PDA@PUF catalyzed the semi-hydrogenation of terminal as well as internal alkynes with excellent alkene selectivity. Pd@PDA@PUF also promoted the Suzuki–Miyaura bialyl coupling efficiently under air.
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Comment
Pd@PDA@PUF was readily recovered and reused without significant loss of its catalytic performance. A single cubic sample of Pd@PDA@PUF (8 cm3; Pd loading 7 μmol) catalyzed 15 consecutive catalytic reactions consisting five runs of semi-hydrogenation of phenylacetylene, five runs of Suzuki coupling of PhBr and PhB(OH)2, and again five runs of semi-hydrogenation of phenylacetylene; 0.23 mol% Pd for all reactions with 3 mmol of substrate in each run.
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Publication History
Article published online:
17 March 2023
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