Nitration of Dimethyl 1-Substituted Indole-2,3-dicarboxylates: Synthesis of Nitro- and Aminoindole Derivatives
作者:Yasuyoshi Miki、Misako Umemoto、Hiroko Maruyama、Makoto Kuromatsu、Hiromi Hamamoto
DOI:10.3987/com-07-11145
日期:——
5-nitroindole-2,3-dicarboxylate as the major product. In a similar manner, the dimethyl 1-benzyl- and 1-benzenesulfonylindole-2,3-dicarboxylates provided a mixture of the corresponding 4-nitro-, 5-nitro-, 6-nitro- and 7-nitroindole derivatives. However, dimethyl 5-bromoindole-2,3- dicarboxylate gave dimethyl 5-bromo-4-nitroindole-2,3-dicarboxylate as the sole product, which was converted to dimethyl 4-aminoindole-2
在氯化锡 (IV) 存在下,用四氟硼酸硝鎓处理吲哚-2,3-二羧酸二甲酯,产生了 5-硝基吲哚-2,3-二羧酸二甲酯作为主要产物。以类似的方式,1-苄基-和1-苯磺酰基-2,3-二羧酸二甲酯提供了相应的4-硝基-、5-硝基-、6-硝基-和7-硝基吲哚衍生物的混合物。然而,5-溴吲哚-2,3-二羧酸二甲酯得到5-溴-4-硝基吲哚-2,3-二羧酸二甲酯作为唯一产物,其转化为4-氨基吲哚-2,3-二羧酸二甲酯。