Enantioselective Syntheses
of 2-Substituted Pyrrolidines from Allylamines by Domino Hydroformylation-Condensation:
Short Syntheses of (<i>S</i>)-Nicotine and the
Alkaloid 225C
作者:Günter Helmchen、Pierre Dübon、Andreas Farwick
DOI:10.1055/s-0029-1217165
日期:——
2-substituted pyrrolidines based on rhodium-catalyzed hydroformylations of allylamines and their N-alkyl and N-acyl derivatives, which were prepared by asymmetric allylic substitutions, are described. The outcome of the hydrofonnylation reaction was controlled by the substituent at nitrogen, not by the substituent at carbon. In the case of N-alkylallylamines in situ reduction to the pyrrolidines occurred