597533-46-5Relevant articles and documents
Syntheses of [1,2,3]selenadiazolo[4,5-e]benzofuran or benzothiophene, [1,2,3]thiadiazolo[4,5-e]benzofuran or benzothiophene, and 2-benzofuranyl-1,3,4-oxodiazole derivatives
Shekarchi,Ellahiyan,Akbarzadeh,Shafiee
, p. 427 - 433 (2007/10/03)
Dehydrogenation of ethyl 3-methyl-4-oxo-4,5,6,7-tetrahydrobenzofuran-2-carboxylate 1 with 2,2′-azobisisobutyronitrile and N-bromosuccinimide gave ethyl 4-hydroxy-3-methylbenzofuran-2-carboxylate 3. Reaction of compounds 3-4 with hydrazine hydrate afforded