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|標題:||The application of chiral amino thiols as catalysts in the enantioselective addition of diethylzinc to aldehydes||作者:||Tseng, S.L.
|關鍵字:||organozinc reagents;carbonyl-compounds;asymmetric induction;alkylation;disulfide;ephedrine||Project:||Tetrahedron-Asymmetry||期刊/報告no：:||Tetrahedron-Asymmetry, Volume 15, Issue 21, Page(s) 3375-3380.||摘要:||
Starting from (S)-(-)-valine, a series of new chiral amino thiol and corresponding thioacetate ligands were prepared in an efficient manner and applied in the asymmetric diethylzinc addition to aldehydes with excellent enantioselectivity as high as 99% ee and with a catalytic loading as little as 0.02 mol% of the amino thiol 11c. (C) 2004 Published by Elsevier Ltd.
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