Talk:Benzylideneacetone
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Article Grading: The following comments were left by the quality and importance raters: (edit · history · watch · refresh) The article is in error. The sentence "Treatment of benzylideneacetone with the Grignard reagent methyl magnesium bromide followed by acid-induced dehydration gives 1-phenyl-1,3-butadiene.[3]" is incorrect. The reaction of the Grignard reagent with Cinnamaldehyde, not Benzalacetone, followed by acid-induced dehydration gives 1-Phenyl-1,3-butadiene, as is shown in the cited article. The reaction of this Grignard reagent with Benzalacetone would actually give a mixture of the products resulting from 1,2-and 1,4-addition to the substrate. Addition to the carbonyl followed by dehydration would give 1-Phenyl-3-methylbutadiene. Conjugate addition gives 4-Phenylpenten-2-one. 66.43.171.250 (talk) 19:47, 23 April 2008 (UTC) |
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