作者:Khaled Youssef、Magali Allain、Thomas Cauchy、Frédéric Gohier
DOI:10.1039/d3nj00029j
日期:——
2-Bromo, 3-bromothiophene, 2,5-dibromothiophene, 3,4-dibromothiophene and perbrominated thiophene have been oxidized under different conditions to target thiophene S,S-dioxide. Depending on the substitution, sulfone is obtained when the thiophene is hindered. On the other hand, monosubstituted thiophenes can’t be transformed into sulfone, and the sulfoxide intermediate is too reactive and dimerizes
2-溴、3-溴噻吩、2,5-二溴噻吩、3,4-二溴噻吩和全溴化噻吩已在不同条件下被氧化以靶向噻吩S , S - 二氧化物。取决于取代,当噻吩受阻时获得砜。另一方面,单取代噻吩不能转化为砜,亚砜中间体反应性太强而二聚化。晶体的获得使我们能够确认结构。3,4-二溴噻吩是介于两者之间的化合物,因为通过调节氧化,可以获得环加合物或可以分离砜。后者甚至可以演变为苯并噻吩砜的形成。