Lipase catalysis in the preparation of 3-(1-amino-3-butenyl)pyridine enantiomers
作者:Ari Hietanen、Tiina Saloranta、Reko Leino、Liisa T. Kanerva
DOI:10.1016/j.tetasy.2012.09.003
日期:2012.12
The kinetic resolution of 1-(3-pyridyl)buten-3-ylamine with activated and non-activated acyl donors and Burkholderia cepacia lipase (lipase PS-D) under dry conditions has been studied. The N-acylation in isopropyl acetate (E > 100) and the acidic hydrolysis of the (R)-amide produced gave the corresponding enantiomerically enriched amines. (C) 2012 Elsevier Ltd. All rights reserved.
Homoallylic amines as efficient chiral inducing frameworks in the conjugate addition of amides to α,β-unsaturated esters. An entry to enantio-enriched diversely substituted amines
The diastereoselective conjugateaddition of secondary homoallylamines, obtained in the enantioenriched form via allylmetallation of imines, to α,β-unsaturated esters is reported. This method allows access to valuable building blocks as well as heterocyclic skeletons, providing tertiary amines bearing two chains integrating a stereogenic center adjacent to the nitrogen atom.