Stereoselective Carbonyl Olefination with Fluorosulfoximines: Facile Access to <i>Z</i>
or <i>E</i>
Terminal Monofluoroalkenes
作者:Qinghe Liu、Xiao Shen、Chuanfa Ni、Jinbo Hu
DOI:10.1002/anie.201610127
日期:2017.1.9
such as homeostasis regulators and mechanism‐based enzyme inhibitors. However, it is difficult to control the stereoselectivity of known carbonyl olefination reactions, and olefinmetathesis is limited to disubstituted terminal monofluoroalkenes. Although sulfoximines have been used extensively in organic synthesis, reports on their use in carbonyl olefination reactions have not appeared to date. Herein
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 rearrangementreaction. 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