SCHEDULED MAINTENANCE
Direct cyclohexanone oxime synthesis via oxidation–oximization of cyclohexane with ammonium acetate†
Abstract
An unexpected cascade reaction for oxidation–oximization of cyclohexane with ammonium acetate was developed for the first time to access cyclohexanone oxime with 50.7% selectivity (13.6% conversion). Tetrahedral Ti sites in Ni-containing hollow titanium silicalite can serve as bifunctional catalytic centers in the reaction. This methodology not only provides a direct approach to prepare cyclohexanone oxime, but also simplifies process chemistry. Various available nitrogen sources, such as ammonium salt and even ammonia can be used as starting materials.
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