Silica sulfuric acid a novel and heterogeneous catalyst for the synthesis of some new oxindole derivatives
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- 作者：Javad Azizian ; Ali A. Mohammadi ; Narges Karimi ; Mohammad R. Mohammadizadeh and Ali R. Karimi
- 关键词：Silica sulfuric acid ; Heterogeneous catalyst ; Indole ; Isatin ; Oxindole
- 刊名：Catalysis Communications
- 出版年：2006
- 出版时间：October 2006
- 年：2006
- 卷：7
- 期：10
- 页码：752-755
- 全文大小：113 K
文摘
Silica sulfuric acid catalyzed efficiently the electrophilic substitution reaction of an indoles with various isatins in dicholoro methane to afford the corresponding oxindoles derivatives in high yields under r.t. The catalyst exhibited remarkable reusable activity.