Palladium catalysed cross-coupling of vinyl triflates with 9-alkyl-9-borobicyclo[3,3,1]nonanes. total synthesis of (−)-Isoseiridine.
作者:Ronald Grigg、Peter Kennewell、Vladimir Savic
DOI:10.1016/s0040-4020(01)80703-1
日期:1994.5
Catalysed cross-coupling of butenolide-3-triflates to 9-alkyl-9-borobicyclo[3.3.1]nonanes occurs in moderate to good yield and tolerates a range of functionality. Application of this methodology combined with addition of diethylzinc to a butenolide aldehyde in the presence of an ephedrine derivative leads to a 3-step synthesis of (−)-isoseiridine with 88%e.e. in good yield.