Silyl Cyanopalladate-Catalyzed Friedel–Crafts-Type Cyclization Affording 3-Aryloxindole Derivatives
作者:Taiga Yurino、Takeshi Ohkuma、Hamdiye Ece、Yuji Tange
DOI:10.1055/a-1373-7017
日期:2021.6
Friedel–Crafts-type cyclization. The reaction was catalyzed by a trimethylsilyl tricyanopalladate complex generated in situ from trimethylsilyl cyanide and Pd(OAc)2. Wide varieties of diethyl phosphates derived from N-arylmandelamides were converted almost quantitatively into oxindoles. When N,N-dibenzylamide was used instead of an anilide substrate, a benzo-fused δ-lactam was obtained. An oxindole product was subjected
3-芳基吲哚衍生物是通过Friedel-Crafts型环化合成的。该反应由三甲基甲硅烷基氰化物和Pd(OAc)2原位生成的三甲基甲硅烷基三氰基钯酸酯络合物催化。来自N-芳基扁桃酰胺的磷酸二乙酯种类繁多,几乎定量地转化为羟吲哚。当使用N,N-二苄基酰胺代替苯胺基物时,得到苯并稠合的δ-内酰胺。羟吲哚产物进行取代反应,得到具有两个不同芳基的3,3-二芳基羟吲哚。