sulfones with terminal alkynes gave unsaturated δ-keto sulfones in good to excellent yields under rhenium catalysis. In this reaction, the insertion of the alkynes into the nonstrained carbon–carbon single bond between the α- and β-positions of the β-keto sulfones proceeded smoothly, and (Z)-isomers were produced with high regio- and stereoselectivities.
在terminal催化下,用末端
炔烃处理β-酮砜可得到不饱和的δ-酮砜。在该反应中,
炔烃顺利插入β-酮砜的α-和β-位之间的非应变碳-碳单键中,并以高区域和立体选择性生成(Z)-异构体。