Highly Active Multidentate Alkyne Metathesis Catalysts: Ligand-Activity Relationship and Their Applications in Efficient Synthesis of Porphyrin-Based Aryleneethynylene Polymers

作者：Jyothish Kuthanapillil; Wang Qi; Zhang Wei^*

来源：Advanced Synthesis & Catalysis, 2012, 354(11-12): 2073-2078.

DOI：10.1002/adsc.201200243

• acyclic diyne metathesis polymerization
• alkyne metathesis
• metal-alkylidynes
• podand motif
• porphyrin polymers

A series of tris(arylmethyl)ammonium-coordinated molybdenum(VI) propylidyne catalysts was synthesized. Such N-quarternized multidentate catalysts showed high robustness, strong resistance to small alkyne polymerization and significantly enhanced catalytic activity compared to their corresponding tris(arylmethyl) amine-based analogues. The high activity of these new catalysts also enabled the efficient synthesis of ethynylene-bridged porphyrin-based arylene ethynylene polymers via alkyne metathesis, which represents a highly efficient, defect-free, viable approach for the synthesis of this class of intriguing polymers.

• 出版日期2012-8