Stereoselective Synthesis of 2,3,5-Trisubstituted Pyrrolidines Using Metathesis-Derived β-Aminoallylsilanes
作者:Stephen P. Marsden
DOI:10.3987/com-08-s(d)55
日期:——
Amine-functionalised allylsilanes, readily prepared by olefin cross metathesis of protected homoallylamines with allyltrimethylsilane, undergo stereoselective condensation with aldehydes to yield trisubstituted pyrrolidines.
Diastereoselective Synthesis of 2,6-trans-Disubstituted Piperidinesvia Sequential Cross-Metathesis–Cationic Cyclisation
作者:Stefan Mix、Siegfried Blechert
DOI:10.1002/adsc.200600482
日期:2007.1.8
Ruthenium-catalysed cross-metathesis of protected homoallylamine derivatives with vinyl carbinols furnished allylic alcohols, which underwent stereoconvergent cyclisation to trans-tetrahydropyridines upon treatment with BF3⋅OEt2. The new methodology was used for the preparation of enantiopure piperidine and indolizidine natural products.