RETRO-ENE REACTION .2. REACTION OF 4,5-DICHLORO-1-HYDROXYMETHYLPYRIDAZIN-6-ONE WITH ALKYL HALIDES AND CARBOXYLIC ACID CHLORIDES

摘要

1-Alkyl-4,5-dichloropyridazin-6-ones and (4,5-dichloro-6-oxopyridazin-1-yl)methylcarboxylates were synthesized from 4,5-dichloro-1-hydroxymethylpyridazin-6-one and the corresponding alkyl halides or carboxylic acid chlorides. Also the reaction mechanisms via a fragmentation of retro-ene type are discussed. [References: 6]