Abstract
A novel and efficient procedure was developed for the preparation of diaminotriarylmethanes through the Baeyer condensation of aromatic aldehydes and N,N-dimethylaniline or N,N-diethylaniline in the presence of niobium chloride under solvent-free conditions. This approach offers several advantages, such as short reaction time, high yields, low cost, and mild reaction conditions.
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Acknowledgments
We are thankful to the National Natural Science Foundation of China (20872025 and 21072042) and the Nature Science Foundation of Hebei Province (B2008000149) for financial support of this work.
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Hou, JT., Gao, JW. & Zhang, ZH. An efficient and convenient protocol for the synthesis of diaminotriarylmethanes. Monatsh Chem 142, 495–499 (2011). https://doi.org/10.1007/s00706-011-0461-2
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DOI: https://doi.org/10.1007/s00706-011-0461-2