Iron-Catalyzed Regio- and Stereoselective Chlorosulfonylation of Terminal Alkynes with Aromatic Sulfonyl Chlorides
作者:Xiaoming Zeng、Laurean Ilies、Eiichi Nakamura
DOI:10.1021/ol203446t
日期:2012.2.3
Terminal alkynes react with aromatic sulfonyl chlorides in the presence of an iron(II) catalyst and a phosphine ligand to give (E)-β-chlorovinylsulfones with 100% regio- and stereoselectivity. Various functional groups, such as chloride, bromide, iodide, nitro, ketone, and aldehyde, are tolerated under the reaction conditions. Addition of tosyl chloride to a 1,6-enyne followed by radical 5-exo-trig
末端炔烃在铁(II)催化剂和膦配体存在下与芳族磺酰氯反应,得到具有100%区域和立体选择性的(E)-β-氯乙烯基砜。在反应条件下可以耐受各种官能团,例如氯,溴,碘,硝基,酮和醛。甲苯磺酰氯的1,6-烯炔加成,随后通过自由基-5-外- trig的环化,得到环外alkenylsulfone。