1224234-81-4Relevant articles and documents
Synthesis of 2,3-Bis(arylamino)benzofurans and 2,3-Bis(arylimino)-2,3- dihydrobenzofurans by a Lewis Acid Catalyzed Reaction of 2-Aryliminophenols with Aryl Isocyanides
Kobayashi, Kazuhiro,Shirai, Yuu,Fukamachi, Shuhei,Konishi, Hisatoshi
experimental part, p. 666 - 670 (2010/04/26)
An efficient method for the preparation of 2,3-bis(arylamino)benzofurans and 2,3-bis(arylimino)-2,3-dihydrobenzofurans is described that is based on the reaction of 2-aryliminophenols with aryl isocyanides in the presence of a catalytic amount of boron trifluoride diethyl etherate. The reaction gives 2,3-bis(arylamino)benzofurans, some of which are transformed into 2,3-bis(arylimino)-2,3-dihydrobenzofurans by air oxidation, mostly during workup. Georg Thieme Verlag Stuttgart · New York.