potassium permanganate 、
ethyl 3-aminosulfinyl-5-chloro-1-methyl-indole-2-carboxylate 在
水 、
丙酮 、
ethyl 5-chloro-1-methyl-3-sulfamoyl-indole-2-carboxylate 作用下,
以
水 、
丙酮 为溶剂,
反应 18.5h,
以After acidification of the filtrate to pH 3, another product, 7-chloro-4-methyl-2H-isothiazolo[4,5-b]indole-3-(4H)-one-1,1-dioxide, was obtained的产率得到7-chloro-4-methyl-1,1-dioxo-1,4-dihydro-2
H-1λ
6-isothiazolo[4,5-
b]indol-3-one