C−O Hydrogenolysis Catalyzed by Pd-PMHS Nanoparticles in the Company of Chloroarenes
作者:Ronald J. Rahaim、Robert E. Maleczka
DOI:10.1021/ol102757v
日期:2011.2.18
Catalytic Pd(OAc)2 and polymethylhydrosiloxane (PMHS), in conjunction with aqueous KF, and a catalytic amount of an aromatic chloride, effects the chemo-, regio-, and stereoselective deoxygenation of benzylic oxygenated substrates at room temperature in THF. Preliminary mechanistic experiments suggest the process to involve palladium−nanoparticle-catalyzed hydrosilylation followed by C−O reduction
催化 Pd(OAc) 2和聚甲基氢硅氧烷 (PMHS) 与水性 KF 和催化量的芳族氯化物结合,在室温下在 THF 中影响苄基氧化底物的化学、区域和立体选择性脱氧。初步的机械实验表明该过程涉及钯-纳米颗粒催化的氢化硅烷化,然后是 CO 还原。氯芳烃添加剂似乎通过 HCl 的缓慢受控释放促进氢解过程。