Radical β-addition to acyclic α-(arylsulfinyl) enones: Pummerer-type rearrangement
作者:Nobuyuki Mase、Yoshihiko Watanabe、Yoshio Ueno、Takeshi Toru
DOI:10.1039/a800828k
日期:——
The reaction of (S,E)-3-(p-tolylsulfinyl)pent-3-en-2-one with an isopropyl radical, generated from isopropyl iodide and triethylborane, gives the non-stereoselective addition product and an unexpected α-(arylsulfanyl) enone which is formed through a radical addition and subsequent Pummerer-type rearrangement. The formation of the α-(arylsulfanyl) enone depends upon the additives used as well as the aryl group on the sulfur.
(S,E)-3-(对甲苯基亚磺酰基)戊-3-烯-2-酮与由碘化异丙基和三乙基硼烷生成的异丙基发生反应,得到非立体选择性加成产物和意外的δ-(芳基硫酰基)烯酮,后者是通过自由基加成和随后的普默尔型重排形成的。δ-(芳基硫基)烯酮的形成取决于所使用的添加剂以及硫上的芳基。