Regiodivergent Synthesis of 1- and 2-Arylsulfonyl 1,3-Dienes
作者:Carissa S. Hampton、Michael Harmata
DOI:10.1021/ol500259m
日期:2014.2.21
In the course of a study of the alkoxyallylation of allenic sulfones through the use of π-allylpalladium chemistry, we discovered an isomerization of allenic sulfones to arylsulfonyl 1,3-dienes. Under conditions of palladium catalysis in the presence of acids such as acetic acid, allenic sulfones are converted to 1-arylsulfonyl 1,3-dienes. On the other hand, nucleophilic catalysis using triphenylphosphine
[2,3] Sigmatropic Rearrangement of Propargylic Sulfinates by a Pale Ag<sup>1</sup>-USY Zeolite and Silver Salts
作者:Carissa S. Hampton、Michael Harmata
DOI:10.1002/adsc.201400978
日期:2015.2.9
AbstractThe sigmatropic rearrangement of propargylic sulfinates to allenic sulfones is catalyzed by the silver cation. The Ag1‐USY zeolite, as well as non‐coordinating silver salts, lead to essentially quantitative yields of the corresponding allenic sulfones.magnified image