Highly selective epoxidation of cyclohexene by reductive activation of molecular dioxygen using hexylviologen as catalyst

✍ Scribed by Yoshihiro Tsuda; Syuichi Matsui; Kohshin Takahashi

• Book ID: 104424475
• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 134 KB
• Volume: 148
• Category: Article
• ISSN: 1381-1169
• DOI: 10.1016/s1381-1169(99)00094-1

✦ Synopsis

Cyclohexene oxide, 2-cyclohexene-1-one, and 2-cyclohexene-1-ol were produced as oxidation products of cyclohexene by adding Br y ions into an air-equilibrated acetonitrile suspension containing zinc powder, hexylviologen, benzoic anhydride, and cyclohexene. With increasing the concentration of Br y ions, the epoxidation selectivity increased up to 85% with about 60% of the Zn-utilizing efficiency.