Add time:07/26/2019         Source:sciencedirect.com

A synthesis of 3-formyl-4-pyrones by Vilsmeier-Haack reaction of substituted benzyl methyl ketones has been reported. The reaction of benzyl ethyl ketone with chloromethyleneiminium salt gave corresponding 4-pyrone while phenoxy acetone gave N,N-dimethylamino substituted pentadienaldehyde.

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