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  Home > JCE Print > Journal of Chemical Education > Issues > 1996  > March  >
Laboratory Experiments
A Colorful Grignard Reaction: Preparation of the Triarylmethane Dyes from 4-Bromo-N,N-Dimethylaniline
Douglass F. Taber, Robert P. Meagley, and Danielle Supplee
University of Delaware, Newark, DE 19716
Cover
March 1996
Vol. 73 No. 3
p. 259
Abstract
The Grignard reagent is readily prepared from 4-bromo-N,N-dimethylaniline. Addition of this Grignard reagent to diethyl carbonate, followed by acid hydrolysis gives the triarylmethane dye Crystal Violet. Addition of the Grignard reagent to methyl benzoate, followed by acid hydrolysis gives the dye Malachite Green. A procedure suitable for an undergraduate laboratory course is presented.

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*  Citation
 Taber, Douglass F.; Meagley, Robert P.; Supplee, Danielle. J. Chem. Educ. 1996 73 259.
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*  History
 Created:
Last Updated:		 9/23/1999
5/22/2006
Link to Cover added (June 2004).
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