Directional degradation of lignin model compounds by a palladiumcatalyzed alkynylation under ambient environment

Key Points

• The aim is to explore palladium-catalyzed alkynylation for the transformation of lignin model compounds.
• Utilized palladium as a catalyst for alkynylation
• Focused on diaryl ethers as starting materials
• Conducted experiments in basic ionic liquid
• Employed regioselective bond cleavage
• Successfully achieved C(sp2)-O bond cleavage
• Generated diverse aryl internal alkynes
• Results indicated efficient alkynylation under ambient conditions