Asymmetric Decarboxylative Claisen Rearrangement Reactions of Sulfoximine-Substituted Allylic Tosylacetic Esters
作者:Donald Craig、Fabienne Grellepois、Andrew J. P. White
DOI:10.1021/jo050747d
日期:2005.8.1
Allylic acetate esters containing a variety of N-arylsulfonyl sulfoximines on the acetyl residue have been prepared and submitted to the decarboxylative Claisen rearrangement reaction. Rearranged products were isolated in generally good yields, and diastereoselectivities up to 82:18 have been obtained. The N-(2,4,6-triisopropylphenylsulfonyl)-S-phenyl sulfoximine moiety gave the best selectivity. The
已经制备了在乙酰基残基上含有多种N-芳基磺酰基磺酰亚胺亚胺的烯丙基乙酸酯,并将其进行脱羧化克莱森重排反应。重排的产物通常以良好的产率分离,并且已经获得了高达82:18的非对映选择性。所述ñ - (2,4,6- triisopropylphenylsulfonyl) -小号-苯基亚磺酰亚胺部分,得到最好的选择性。通过X射线晶体学确定主要异构体的立体化学。提出了解释重排的立体化学过程的模型。