Substituted–- pyrones and process for their preparation

Details Substituted–- pyrones and process for their preparation Substituted–- pyrones and process for their preparation

C - Chemistry, Metallurgy

07

D

260/359.7

C07D 309/38 (2006.01)

Patent

CA 2002727

6-17301/+ Substituted .alpha.-pyrones and process for their preparation Abstract of the Disclosure The invention relates to .alpha.-pyrones of formula I Image (I), wherein R1 is chloro or bromo and R2 is hydrogen, chloro or bromo. The halogen in 4-position can be replaced, for example, by alkoxy, alkylthio or secondary amino. The .alpha.-pyrones are suitable diene components for Diels-Alder reactions.

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