催化学报 ›› 2009, Vol. 30 ›› Issue (9): 856-858.

• 研究快讯 • 上一篇    下一篇

纳米银催化氧化偶联硫醇制二硫化物

闫江梅, 陶辉旺, 曾牡玲, 陶军, 张世鸿, 闫智英, 王伟, 王家强   

  1. 云南大学应用化学系, 教育部自然资源药物化学重点实验室, 云南昆明 650091
  • 收稿日期:2009-09-25 出版日期:2009-09-25 发布日期:2009-09-25

PVP-Capped Silver Nanoparticles as Catalyst for Oxidative Coupling of Thiols to Disulfides

YAN Jiangmei, TAO Huiwang, ZENG Muling, TAO Jun, ZHANG Shihong, YAN Zhiying, WANG Wei, WANG Jiaqiang*   

  1. Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Department of Applied Chemistry, Yunnan University, Kunming 650091, Yunnan, China
  • Received:2009-09-25 Online:2009-09-25 Published:2009-09-25

摘要: 采用多元醇为溶剂和还原剂制备了聚乙烯吡咯烷酮 (PVP) 保护的纳米银, 并将其用于催化正十二烷基硫醇氧化偶联反应. 质谱、红外光谱、拉曼光谱和核磁共振氢谱表征结果表明所得产物为二硫化物. 考察了反应时间、反应温度、催化剂和水的用量等对正十二烷基硫醇氧化偶联反应的影响, 从而得出优化的反应条件: 0.157 mmol PVP 保护的纳米银, 20ul 水, 100 oC 下反应 3 h. 此外, 进一步将 PVP 保护的纳米银用于正丁硫醇和正辛硫醇的氧化偶联反应, 也得到了相应的二硫化物.

关键词: 聚乙烯吡咯烷酮, 纳米银, 氧化偶联, 硫醇, 二硫化物

Abstract: PVP-capped silver nanoparticles were used as active catalyst for the oxidation of n-dodecanethiol, n-butanethiol, and n-octanethiol with trace water to form their corresponding disulfides. The reactions take place under relatively mild conditions without a great amount solvent.

Key words: polyvinylpyrrolidone, silver nanoparticle, oxidative coupling, thiol, disulfide