852050-28-3Relevant articles and documents
Cu/Fe/O=PPh3-catalyzed etherification for the synthesis of aryl 3-benzo[b]thienyl ethers
Mitsudo, Koichi,Asada, Takuya,Inada, Tomohiro,Kurimoto, Yuji,Mandai, Hiroki,Suga, Seiji
, p. 1044 - 1047 (2018/08/24)
Cu/Fe-cocatalyzed cross-coupling reactions between 3-bromobenzo[b]thiophene and hydroxyaryls are described herein. The combination of Cu and Fe catalysts is important for the progress of the reactions, and the use of triphenylphosphine oxide as a ligand suppresses the dehalogenation of 3-bromobenzo[b]thiophene, and promptly facilitates the reaction. The obtained aryl benzo[b]thienyl ethers can be converted to π-extended thienobenzofuran derivatives via Pd-catalyzed dehy-drogenative cyclizations.