69788-01-8Relevant articles and documents
Aromatization of Aliphatic Compounds. VII (1). Benzofuranones, Indoles and Oxindoles
Giannangeli, M.,Baiocchi, L.
, p. 891 - 895 (2007/10/02)
2(4H)-5,6-Dihydrobenzofuranones 3 gave, when treated with pyridine hydrochloride at 200 deg, the corresponding arylacetic acids 1 in good yields, whereas the aza analogues, the tetrahydrooxindoles 6 gave indoles in poor yields.The oxidation products of 3 (11 and 13) and of 6 (12, 14 and 15) gave, with the same reagent, benzofuranones and oxindoles, respectively, both in good yields.