Michael Additions of Oxygen and Sulfur Nucleophiles to 3,4-Di-<i>t</i>-butyl-1-[(<i>p</i>-tolyl)sulfonylimino]-1,1-dihydrothiophene. A Comparison Study with 3,4-Di-<i>t</i>-butylthiophene 1-Oxide and 1,1-Dioxide
作者:Takashi Otani、Yoshiaki Sugihara、Akihiko Ishii、Juzo Nakayama
DOI:10.1246/cl.2000.744
日期:2000.7
respectively, through Michael adduct formation. The reaction of 3,4-di-t-butylthiophene 1-oxide with RSNa gave 1,6-Michael adducts, whereas the corresponding reaction of 3,4-di-t-butylthiophene 1,1-dioxide produced a mixture of 1,4- and 1,6-adducts.
3,4-二叔丁基-1-[(对甲苯基)磺酰基亚氨基]-1,1-二氢噻吩与RONa和RSNa的反应分别通过Michael提供了2-烷氧基和2-烷硫基取代的噻吩加合物形成。3,4-二叔丁基噻吩 1-氧化物与 RSNa 反应生成 1,6-迈克尔加合物,而 3,4-二叔丁基噻吩 1,1-二氧化物的相应反应生成 1, 4- 和 1,6- 加合物。