Catalytic oxidation of 1-hexene and cyclohexene with molecular oxygen by iridium nitro complexes

✍ Scribed by P.J Baricelli; V.J Sánchez; A.J Pardey; S.A Moya

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 163 KB
• Volume: 164
• Category: Article
• ISSN: 1381-1169
• DOI: 10.1016/s1381-1169(00)00343-5

✦ Synopsis

The oxidation of 1-hexene and cyclohexene by molecular oxygen catalyzed by the iridium complexes Ir(CH 3 CN) 4 NO 2 2 (A=PF 6 (1) or BF 4 (2)) has been studied in acetonitrile under P(O 2 )=20 atm, T=120 • C, substrate/catalyst=100, t=20 h. Both complexes are active for oxidizing 1-hexene to 1,2-epoxyhexane, 1-hexen-3-one, 2-hexenal, 1-hexen-3-ol and 2-hexen-1-ol and also oxidize cyclohexene to 2-cyclohexen-1-one, 7-oxabicyclo[4.1.0]hexane and 2-cyclohexen-1-ol. Preliminary kinetic parameters are reported for complex (1).