4-溴-5-甲基靛红的Baeyer-Villiger氧化产物的波谱分析

Spectral Analysis of the Baeyer-Villiger Reaction Products of 4_Bromo_5_methyl_2,3_indolinedione

４－溴－５－甲基靛红分别与单过邻苯二甲酸，过硫酸钾－硫酸两种氧化剂发生Ｂａｅｙｅｒ－Ｖｉｌｉｇｅｒ反应，生成两种同分异构体：５－溴－６－甲基－１Ｈ－苯并［１，３］嗪－２，４－二酮和新化合物５－溴－６－甲基－１Ｈ－苯并［１，４］嗪－２，３－二酮。利用ＭＳ、１３ＣＮＭＲ、１ＨＮＭＲ、ＩＲ对产品结构进行了分析鉴定。

By Baeyer-Villiger reaction,4_bromo_5_methyl_2,3_indolinedione can be oxidized by mono_perphthalic acid or by a mixture of potassium persulfate and sulfuric acid (Caro's acid).The chemical structures of the oxidation products were studied by spectral analysis with the aid of MS, 13 C NMR, 1H NMR,and FTIR.The reaction products identified are 5_bromo_6_methyl_1H_benzooxazine_2,4_dione and 5_bromo_6_methyl_1H_benzoloxazine_2,3_dione.The latter compound is original.