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The Reaction of Aromatic Aldehydes and 5,5-Dimethyl-1,3-cyclohexanedione under Solvent-Free Grinding Conditions.

✍ Scribed by Tong-Shou Jin; Ai-Qing Wang; Hui Ma; Jian-She Zhang; Tong-Shuang Li


Publisher
John Wiley and Sons
Year
2006
Weight
22 KB
Volume
37
Category
Article
ISSN
0931-7597

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## Abstract Solvent‐free condensation easily occurred by mixing aromatic aldehydes and 2,3‐dimethyl‐1‐phenyl‐3‐pyrazoline‐5‐one (antipyrine) in the presence of __p__‐toluenesulfonic acid as a solid acid catalyst at room temperature to give the corresponding disubstituted products as sole products i