高分子カルセランド型金ナノクラスター触媒を用いた酸化反応の開発

抄録

Novel polymer incarcerated gold nano-cluster catalysts (PI-Au catalysts) were synthesized by microencapsulation of gold nano-clusters and cross-linking using a co-polymer based on polystyrene. Transmission electron microscopy analysis revealed that this catalyst contained gold clusters whose size was nano order. This catalyst could be used in aerobic oxidation of various alcohols to aldehydes and ketones under atmospheric conditions at room temperature. In the oxidation of sec-phenethyl alcohol at 160 degree, turnover number frequency of the catalyst exceeded 20,000 /h. The oxidation reactions using PI-Au catalysts are excellent in terms of atom economy because only molecular oxygen is consumed and water is generated as the sole co-product.

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