Dimeric chiral Mn(III) Schiff base complex-catalysed enantioselective epoxidation of non-functionalised alkenes

✍ Scribed by Rukhsana I Kureshy; Noor-ul H Khan; Sayed H.R Abdi; Sunil T Patel; Raksh V Jasra

• Publisher: Elsevier Science
• Year: 2001
• Tongue: French
• Weight: 122 KB
• Volume: 42
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/s0040-4039(01)00314-8

✦ Synopsis

Dimeric chiral Mn(III) Schiff base complex 1 has been investigated as a catalyst for enantioselective epoxidation of chromenes, indene and styrene with an objective to explore its efficiency and recycling capability. Excellent conversions were obtained with all alkenes. More than 99% chiral induction, as determined by 1 H NMR using the chiral shift reagent Eu(hfc) 3 , was obtained in the case of electron deficient chromenes, viz. nitro and cyano chromene.