Rearrangement of a series of 1,n diols (n= 2 to 12), one OH group having an adjacent PhS group, under the two sets of conditions in the title, gives single compounds in high yield drawn from four possible classes of product. The effects of chain length help in our understanding of the mechanism of the rearrangements.
Scope and limitation of the [1,4] SPh shift in the synthesis of allylic alcohols
作者:Jason Eames、Maria A. de las Heras、Ray V.H. Jones、Stuart Warren
DOI:10.1016/0040-4039(95)02319-4
日期:1996.2
Rearrangement of 4-PhS-1,3-diols with TsCl in pyridine gives allylicalcohols. We discuss the scope and limitation of this reaction using structural variations, which help to elucidate the mechanism of the reaction. All reactions proceed in high yield and give synthetically useful products.