科研之友
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摘要
The acidified kaolin with sulfuric acid (2% w/w) is introduced as a novel, mild, highly efficient, easily prepared, very cheap, recyclable and ecofriendly catalyst in organic synthesis. This catalyst has been used successfully for the synthesis of bis(indolyl)methanes via the condensation of indoles with aldehydes at room temperature. The simplicity, efficiency, mild reaction condition, high yield of product, easy work up procedure, and recyclability of the catalyst are the advantages of this procedure.
- 出版日期2012
