Synthesis of highly enantiomerically enriched amines by the diastereoselective addition of triorganozincates to N-(tert-butanesulfinyl)imines
作者:Raquel Almansa、David Guijarro、Miguel Yus
DOI:10.1016/j.tetasy.2008.10.012
日期:2008.11
different from the ones observed with the corresponding Grignardreagents, which allows, in several cases, the preparation of both enantiomers of an amine from the same imine substrate. When mixed triorganozincates are used, one can take advantage of the slow transfer rate of the methyl group to use it as a non-transferable one. Both aromatic and aliphatic aldimines, as well as activated ketimines, are good
Diastereoconvergent synthesis of chiral sulfoxides containing vicinal amino alcohol framework
作者:Yan-Xue Zhang、Ling-Yan Chen、Bang-Guo Wei
DOI:10.1016/j.tetlet.2019.151466
日期:2020.2
diastereoconvergent synthesis of chiral sulfoxides containing vicinal amino alcohol framework has been achieved in moderate to good yield with up to 99:1 dr. Different from the previous work, the stereochemistry of the new chiral center was determined solely by the configuration of benzyl tert-butyl sulfoxide, while both the chiral sulfinyl group and the tert-butyldimethylsilyl ether (α-OTBS) group at the α-position