Diastereocontrolled synthesis of pyrrolidines by nickel promoted tandem cyclization-quenching of aminobromodienes
作者:Yolanda Cancho、Joan M. Martín、María Martínez、Amadeu Llebaria、Josep M. Moretó、Antonio Delgado
DOI:10.1016/s0040-4020(97)10220-4
日期:1998.2
aminobromodienes has been extended to the synthesis of 2,3,4-trisubstituted pyrrolidines. By a judicious choice of substituents on the starting aminohalodiene, the diastereoselectivity of the process can be efficiently controlled. When a chiral auxiliary on the nitrogen atom is used, enantiomerically enriched pyrrolidines can be obtained after removal of the auxiliary.
Synthesis of enantiomerically pure (+)- and (−)-protected 5-aminomethyl-1,3-oxazolidin-2-one derivatives from allylamine and carbon dioxide
作者:Isabelle Fernández、Luis Muñoz
DOI:10.1016/j.tetasy.2006.08.006
日期:2006.10
The stereoselective synthesis of enantiomerically pure (5R)- and (5S)-aminomethyl-oxazolidinones with different protecting groups have been carried out from an allyl amine as the source of the carbon backbone. The key reaction is the high yield iodiocyclization of enantiomerically pure allylphenethyl amine in the presence of carbon dioxide. (c) 2006 Elsevier Ltd. All rights reserved.