Thiophene S-oxides: convenient preparation, first complete structural characterization and unexpected dimerization of one of them, 2,5-diphenylthiophene-1-oxide
作者:Pascale Pouzet、Irene Erdelmeier、Daria Ginderow、Jean-Paul Mornon、Patrick Dansette、Daniel Mansuy
DOI:10.1039/c39950000473
日期:——
Oxidation of 2,5-disubstituted thiophenes and benzothiophenes by H2O2 in CF3CO2H–CH2Cl2 appears a convenient method to access the corresponding reactive sulfoxides; it is used to prepare 2,5-diphenylthiophene-1-oxide, which is the first thiophene oxide to be fully structurally characterised crystallographically and the nonplanar structure of the thiophene ring is established; formation of an unexpected
H 2 O 2在CF 3 CO 2 H–CH 2 Cl 2中用H 2 O 2氧化2,5-二取代的噻吩和苯并噻吩似乎是一种获得相应反应性亚砜的简便方法。用于制备2,5-二苯噻吩-1-氧化物,这是第一种在晶体学上具有充分结构特征的噻吩氧化物,并建立了噻吩环的非平面结构。还观察到该亚砜的意外的脱氢二聚体的形成。