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Halogeno Aldol Reaction of Ethyl Vinyl Ketone and Aldehydes Mediated by Titanium Tetrachloride

Department of Chemistry and Biochemistry, Texas Tech University, Lubbock TX 79409-1061, USA
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Molecules 2000, 5(12), 1408-1416; https://doi.org/10.3390/51201408
Received: 29 August 2000 / Revised: 6 December 2000 / Accepted: 6 December 2000 / Published: 22 December 2000
A three-component halogeno aldol reaction has been developed by using titanium tetrachloride as the halogen source as well as the Lewis acid mediator. The dehydration and elimination of hydrogen chloride were inhibited by conducting the reaction at 0 °C in dichloromethane or at room temperature with a shortened reaction time. Seven examples were examined, giving good to high yields (61 - 92%) and modest stereoselectivity (syn/anti: 2.2/1.0 - 8.4/1.0). View Full-Text
Keywords: halides; aldol reaction; titanium tetrachloride halides; aldol reaction; titanium tetrachloride
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Wei, H.-X.; Karur, S.; Li, G. Halogeno Aldol Reaction of Ethyl Vinyl Ketone and Aldehydes Mediated by Titanium Tetrachloride. Molecules 2000, 5, 1408-1416.

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