Benzofuro[2,3-c]pyridazine誘導体の合成
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概要
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3-Phenacylidenebenzofuran-2-one (IIIa) was obtained by the application of triphenylphosphinebenzoylmethylene (IIa)to coumarandione (I). The reduction of IIIa with Na_2S_2O_4 in EtOH-H_2O yielded the corresponding dihydro compound (IV). Reaction of IV with hydrazine hydrate in AcOH afforded a pyridazinone derivative (V) which was a recyclization product. Treatment of V with P_2O_5 in decalin afforded 3-phenylbenzofuro-[2,3-c]pyridazine (VII).
- 公益社団法人日本薬学会の論文
- 1972-12-25
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