55405-42-0Relevant articles and documents
Transformation of 1-thioflavonoids by oxidation and dehydrogenation
Somogyi
, p. 1857 - 1872 (1999)
Simple, efficient and selective new one-step transformations with DDQ, IBDA and I2/DMSO are presented for the dehydrogenation of thioflavanone (1α), as well as the oxidized (1c) and halogenated (1d) derivatives. Ring- contraction reactions of the 1-oxide 1b and 1d leading to the formation of the benzothiophen derivatives 3a and 5, respectively, are also described.