N,N′-Bis(3,5-di-t-butylsalicylidene)-1,2-cyclohexanediamino-manganese(III) chloride – the Jacobsen catalyst

The commercially available Jacobsen catalyst, N,N′-Bis(3,5-di-t-butylsalicylidene)-1,2-cyclohexanedi-aminomanganese(III) chloride 2 , is the most enantioselective catalyst developed to date for the asymmetric epoxidation of a broad range of unfunctionalized olefins. After describing the synthesis of the title compound a brief discussion of the epoxidation mechanism is given. Afterwards several applications for the enantioselective epoxidation of unfunctionalized olefins are described. For each application the scope and limitations are discussed