作者:Blaine T. McClay、Katharine E. Lambson、Serge R. Banini、Tural N. Akhmedov、Björn C.G. Söderberg
DOI:10.1016/j.tet.2023.133578
日期:2023.9
2-(2-nitroaryl)-2-butenoates with potassium tert-butoxide and an electrophile, such as methyl iodide, benzyl bromide and allyl bromide, afforded N-alkoxyindoles. In related reactions, using sodium tert-pentoxide as the base with or without in situ addition of an electrophile afforded N-alkoxy- and N-hydroxyindoles, respectively. Electrophiles such as dimethylsulfate, p-tosyl chloride, and acetic anhydride afforded
将2-(2-硝基芳基)-2-丁烯酸烷基酯用叔丁醇钾和亲电子试剂例如甲基碘、苄基溴和烯丙基溴顺序处理,得到N-烷氧基吲哚。在相关反应中,使用叔戊醇钠作为碱,在原位添加或不添加亲电子试剂的情况下分别得到N-烷氧基-和N-羟基吲哚。诸如硫酸二甲酯、对甲苯磺酰氯和乙酸酐等亲电子试剂分别提供了中等产率的N-甲氧基-、 N-甲苯磺酰氧基和N-乙酰氧基吲哚,而甲基碘、苄基溴和 1-溴己烷则未能形成烷基化产物。以叔戊醇钠为碱。