作者:K.C. Nicolaou
DOI:10.1016/s0040-4020(01)93285-5
日期:——
A number of organoselenium reagents are introduced as efficient initiators of ring closures leading from unsaturated substrates to lactones, cyclic ethers, cyclic thioethers, N-heterocycles and carbocycles. These cyclizations often proceed with high ring selectivity and stereoselectivity and are accompanied by the incorporation of the phenylseleno group (PhSe) into the final product. Methods are described
引入了许多有机硒试剂,作为从不饱和底物到内酯,环醚,环硫醚,N-杂环和碳环的有效的环闭合引发剂。这些环化通常以高环选择性和立体选择性进行,并伴随有苯硒基(PhSe)结合到最终产物中。描述了通过氧化或还原以实现不饱和或饱和来有效去除该基团(PhSe)的方法。最后,概述了这种基于硒的方法在稳定和具有生物活性的前列环素的合成中的成功应用。包括代表性的实验程序。