ethyl 2,4-dioxo-4-phenylbutanoate -Drug Synthesis Database

【结构式】

【分子编号】60602

【品名】ethyl 2,4-dioxo-4-phenylbutanoate

【CA登记号】

【分子式】C₁₂H₁₂O₄

【分子量】220.22488

【元素组成】C 65.45% H 5.49% O 29.06%

与该中间体有关的原料药合成路线共 1 条

合成路线1

该中间体在本合成路线中的序号：(II)

Claisen condensation of acetophenone (I) with diethyl oxalate affords the dioxo ester (II). This is condensed with 4-(methylsulfonyl)phenylhydrazine (III) to form the diaryl pyrazole (IV). Ester group reduction in (IV) by means of LiAlH4 provides alcohol (V), which is converted to the corresponding mesylate (VI) upon treatment with methanesulfonyl chloride and Et3N

参考文献中间体

合成目标

【1】 Barbey, S.; et al.; Synthesis and activity of a new methoxytetrahydropyran derivative as dual cyclooxygenase-2/5-lipoxygenase inhibitor. Bioorg Med Chem Lett 2002, 12, 5, 779.

中间体序号	中间体编号	品名	分子式	供应商	用于合成
(I)	45337		C₈H₈O	详情	详情
(II)	60602	ethyl 2,4-dioxo-4-phenylbutanoate	C₁₂H₁₂O₄	详情	详情
(III)	60603	1-[4-(methylsulfonyl)phenyl]hydrazine; 4-hydrazinophenyl methyl sulfone	C₇H₁₀N₂O₂S	详情	详情
(IV)	60604	ethyl 1-[4-(methylsulfonyl)phenyl]-5-phenyl-1H-pyrazole-3-carboxylate	C₁₉H₁₈N₂O₄S	详情	详情
(V)	60605	{1-[4-(methylsulfonyl)phenyl]-5-phenyl-1H-pyrazol-3-yl}methanol	C₁₇H₁₆N₂O₃S	详情	详情
(VI)	60606	{1-[4-(methylsulfonyl)phenyl]-5-phenyl-1H-pyrazol-3-yl}methyl methanesulfonate	C₁₈H₁₈N₂O₅S₂	详情	详情

Extended Information