“…Oxindoles (1,3-dihydro-2H-indol-2-ones) are a privileged structural motif, which not only occur widely in bioactive natural products and pharmaceuticals [1][2][3][4][5][6] but are also used as synthetic intermediates for various organic transformations [7][8][9][10][11][12]. Many synthetic strategies have been established to access this skeleton, including the oxidation of indoles, [13][14][15] transition metal-catalyzed Heck-type reactions of acrylamides, [16][17][18][19][20][21][22][23][24] metalcatalyzed cyclization of o-haloacetanilides, [25][26][27][28][29] reductive desulfurization of 3-methylthiooxindoles, 30,31 double C-H oxidative coupling of functionalized acetanilides, [32][33][34][35][36][37][38][39] the C-H oxidative radical coupling of acrylanilides, [40][41][42][43] and so on (Scheme 1). Regrettably, all of the aforementioned methods inherently require a specifically functionalized precursor such as the presence of an ortho-halogen, an amino group and the...…”