[4+2]-Cycloaddition of sterically hindered thiophene S-oxides to alkenes and SO extrusion reactions of the cycloadducts
作者:Thies Thiemann、Jesus Iniesta、David J. Walton
DOI:10.1080/10426507.2015.1100191
日期:2016.6.2
GRAPHICAL ABSTRACT ABSTRACT Cycloaddition reactions of 2,5-di-tert-butylthiophene S-oxide and 2,3,4,5-tetrakis(p-tolyl)thiophene S-oxide with alkenes are described. The reactivity of 2,5-di-tert-butylthiophene S-oxide as diene in Diels–Alder reactions is compared with 2,5-di-tert-butylthiophene S,S-dioxide. The thermal and photochemical SO extrusion reactions of the cycloadducts under formation of
图形摘要摘要描述了2,5-二-叔丁基噻吩S-氧化物和2,3,4,5-四(对甲苯基)噻吩S-氧化物与烯烃的环加成反应。将 2,5-二叔丁基噻吩 S-氧化物在 Diels-Alder 反应中作为二烯的反应性与 2,5-二-叔丁基噻吩 S,S-二氧化物进行比较。举例说明了在形成高度取代的芳族化合物的情况下环加合物的热和光化学 SO 挤出反应。