Hydroxyl <scp>Group‐Enabled</scp> Highly Efficient Ligand for <scp>Pd‐Catalyzed</scp> Telomerization of 1,<scp>3‐Butadiene</scp> with <scp>CO<sub>2</sub></scp>
Zhengyi Yang, Chaoren Shen, Kaiwu Dong
Abstract
Comprehensive Summary By introducing hydroxyl group into PPh 3 ligand, a promoter‐free palladium catalytic system based on ( p ‐HOC 6 H 4 )PPh 2 ligand was developed for the telomerization of 1,3‐butadiene with CO 2 . High activity and selectivity towards CO 2 ‐incorporated divinyl δ‐lactone monomer were achieved (TON/TOF: up to 4540/568 h –1 ; selectivity of δ‐lactone and its isomers: up to 97%). The key role of phenolic hydroxyl group of the ligand in attaining high activity was validated. The good performance of large‐scale reaction in batch reactor demonstrated the potential utility of this simple catalytic system in valorizing CO 2 with bulk chemical feedstock.
Topics & Concepts
TelomerizationChemistryCatalysisLigand (biochemistry)SelectivityMonomerPalladiumLactoneCombinatorial chemistryOrganic chemistryMedicinal chemistryBiochemistryReceptorPolymerCarbon dioxide utilization in catalysisAsymmetric Hydrogenation and CatalysisCO2 Reduction Techniques and Catalysts