A mild and efficient synthesis of a chiral pyridazinone derivative
2013
Kojima, Akihiko | Kohno, Yasushi
We found a mild and efficient reaction condition for construction of a chiral 5-methyl-4,5-dihydropyridazin-3(2H)-one from a chiral β-methyl γ-ketocarboxylic acid via the corresponding acid hydrazide without racemization. Furthermore, we demonstrated that this two-step reaction can be attained by one-pot reaction. This method could be applied to various kinds of substrates because of the mild reaction conditions.
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