Imidazolium-modified poly(l-leucine) catalyst: an efficient and recoverable catalyst for Juliá–Colonna reactions

✍ Scribed by Wenwei Qiu; Linmei He; Qi Chen; Wanrong Luo; Zhichao Yu; Fan Yang; Jie Tang

• Publisher: Elsevier Science
• Year: 2009
• Tongue: French
• Weight: 252 KB
• Volume: 50
• Category: Article
• ISSN: 0040-4039
• DOI: 10.1016/j.tetlet.2009.06.127

✦ Synopsis

A novel, easily recyclable imidazolium-modified poly(amino acid) catalyst was prepared. This catalyst exhibits high activity for the asymmetric epoxidation of a,b-unsaturated ketones without any pre-activa-