112799-31-2Relevant articles and documents
4-(Phenylthio)-pyrrole-3-carboxylic Acid Esters
Eiden, Fritz,Grusdt, Ulrike
, p. 1020 - 1031 (2007/10/02)
Dihydro(dimethoxy)methylfurancarboxylic acid esters 4A/4B have been applied to the synthesis of the title compounds.With amines as catalysts they react with thiophenols to give the addition products 12a-d, which upon heating with acids eliminate methanol to form the furancarboxylic acid esters 13a-b and 17, whereas reactions with ammonia or amines lead to the pyrrolecarboxylic acid esters 20a-e.Reactions of 4 with 2-aminothiophenol yield the fused pyrrole and pyrrolidine derivatives 15 and 16.Compounds 20b and e were transformed to the benzothiopyranopyrrole carboxylic acid esters 23a and b.