Diastereoselective indium-mediated allylation of N-tert-butanesulfinyl ketimines: easy access to asymmetric quaternary stereocenters bearing nitrogen atoms
作者:Juan Alberto Sirvent、Francisco Foubelo、Miguel Yus
DOI:10.1039/c2cc17493f
日期:——
Indium-mediated allylation of N-tert-butanesulfinyl ketimines afforded in high yields and diastereoselectivities homoallylic amine derivatives with the nitrogenatom bonded to a quaternary stereocenter.
Asymmetric synthesis of trifluoromethylated propargylamines via 1,2-additions of trifluoromethylacetylide to N-tert-butanesulfinyl imines
作者:Xian-Yin Chen、Xiao-Long Qiu、Feng-Ling Qing
DOI:10.1016/j.tet.2008.01.021
日期:2008.3
An efficient method for the asymmetric synthesis of the trifluoromethylated propargylamines was described. Addition of lithium trifluoromethylacetylide, in situ prepared from lithium diisopropylamide and the 2-bromo-3,3,3-trifluoropropene, to various N-tert-butanesulfinylimines provided a range of trifluoromethylated propargyl sulfinamides. Besides high yields and excellent diastereoselectivities