Controlling the Lewis Acidity and Polymerizing Effectively Prevent Frustrated Lewis Pairs from Deactivation in the Hydrogenation of Terminal Alkynes
Qiang Liu, Liu Yang, Chenfei Yao, Jiao Geng, Youting Wu, Xingbang Hu
Abstract
Two strategies were reported to prevent the deactivation of Frustrated Lewis pairs (FLPs) in the hydrogenation of terminal alkynes: reducing the Lewis acidity and polymerizing the Lewis acid. A polymeric Lewis acid (P-BPh3) with high stability was designed and synthesized. Excellent conversion (up to 99%) and selectivity can be achieved in the hydrogenation of terminal alkynes catalyzed by P-BPh3. This catalytic system works quite well for different substrates. In addition, the P-BPh3 can be easily recycled.
Topics & Concepts
Lewis acids and basesChemistryFrustrated Lewis pairCatalysisSelectivityPolymerizationTerminal (telecommunication)Polymer chemistryCombinatorial chemistryOrganic chemistryPolymerTelecommunicationsComputer scienceOrganoboron and organosilicon chemistryCatalytic Cross-Coupling ReactionsSulfur-Based Synthesis Techniques