A Mild Chemo-Enzymatic Oxidation–Hydrocyanation Protocol
作者:Danielle J. Vugts、Lars Veum、Kanar al-Mafraji、Renske Lemmens、Rob F. Schmitz、Frans J. J. de Kanter、Marinus B. Groen、Ulf Hanefeld、Romano V. A. Orru
DOI:10.1002/ejoc.200500905
日期:2006.4
Oxidation–hydrocyanation of γ,δ-unsaturated alcohols using (immobilised) TEMPO/PhI(OAc)2 in combination with HbHNL proceeds smoothly. After (in situ) protection, the resulting cyanohydrin derivatives were obtained in good overall yields and high ee’s. A mild TEMPO-catalysed oxidation protocol is described that yields β,γ-unsaturated aldehydes without isomerisation of the double bond and that is compatible