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Synthetic Communications
An International Journal for Rapid Communication of Synthetic Organic Chemistry
Volume 34, 2004 - Issue 23
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Original Articles

Pinacol Coupling of Aromatic Aldehydes and Ketones Using TiCl3‐Al‐EtOH Under Ultrasound Irradiation

, , &
Pages 4339-4348 | Received 16 Jun 2004, Published online: 10 Jan 2011
 

Abstract

Titanium trichloride in EtOH can be reduced by Al to the corresponding low‐valent titanium complexes. This can reduce some aromatic aldehydes and ketones to the corresponding pinacols in 40–82% yields within 30–90 min at r.t. under ultrasound irradiation.

Acknowledgments

We thank the Educational Ministry of China and Natural Science Foundation of Hebei Province (203107), China, for financial support.

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