PhI(OAc)2/KI-Mediated Reaction of Aryl Sulfinates with Alkenes, Alkynes, and α,β-Unsaturated Carbonyl Compounds: Synthesis of Vinyl Sulfones and β-Iodovinyl Sulfones
(Diacetoxyiodo)benzene [PhI(OAc) 2 , DIB] was able to promote the reaction of sodium aryl sulfinate and potassium iodide (KI) with alkenes and alkynes to afford the corresponding vinyl sulfones and β-iodovinyl sulfones, respectively, in good yields. The salient features of this reaction are that it employs a commercially available and environmentally benign hypervalent iodine(III) reagent, a one-step
Sodium p-toluenesulfinate/copper(II) acetate in free radical reactions
作者:Chuang Che-Ping
DOI:10.1016/s0040-4039(00)60961-9
日期:1992.10
A free radical reaction of alkenes with sodium p-toluenesulfinate/copper(II) acetate to give p-toluenesulfonyl group substituted alkenes, cyclopentane and tetralin systems is described.
A mild and green synthesis of allylic sulfones fromallylicalcohols and sulfonyl hydrazines was developed in water media. The simple and commercially available Pd(PPh3)4 is used as the best catalyst, and the reaction can proceed smoothly at 40 °C under air. This new method does not require the common nitrogen protection and organic media, and can be readily scaled up in gram scale, showing the good