The diastereoselective synthesis of functionalised isoxazolidines using a Cope elimination/intramolecular nitrone cycloaddition strategy
作者:Ian A O'Neil、V.Elena Ramos、Gemma L Ellis、Ed Cleator、Alan P Chorlton、David J Tapolczay、S.Barret Kalindjian
DOI:10.1016/j.tetlet.2004.03.041
日期:2004.4
Functionalised hydroxylamine derivatives of (S)-prolinol prepared by a Cope elimination have been found to undergo oxidation to the nitrone either in the presence of air or a catalytic quantity of TPAP. These undergo intramolecular cycloaddition to give tricyclic isoxazolidines with high diastereoselectivity.
已经发现通过Cope消除法制备的(S)-脯氨醇的官能化羟胺衍生物在空气或催化量的TPAP存在下会氧化成硝酮。它们进行分子内环加成,从而得到具有高非对映选择性的三环异恶唑烷。