• English
  • 简体中文
Login Register
Current Location: Home > Feedback Help Print

【结 构 式】

【分子编号】43194

【品名】2-hydroxy-2-azaspiro[4.4]nonane-1,3-dione

【CA登记号】

【 分 子 式 】C8H11NO3

【 分 子 量 】169.18028

【元素组成】C 56.8% H 6.55% N 8.28% O 28.37%

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:(VIII)

This compound can be obtained by two related ways: The reaction of cyclopentanone (I) with ethyl cyanoacetate (II) by means of HOAc/NH4OAc gives the cyclopentylidene derivative (III), which by reaction with KCN yields 1-(cyanomethyl)cyclopentanecarbonitrile (IV). The hydrolysis of (IV) with HCl affords the dicarboxylic acid (V), which by reaction with Ac2O affords the corresponding cyclic anhydride (VI). Finally, the reaction of (VI) with O-benzyl hydroxylamine hydrochloride and NaHCO3 provides the target compound. Alternatively, the cyclic anhydride (VI) is treated with hydroxylamine hydrochloride and Na2CO3 to gives the N-hydroxyimide (VIII), which is converted into its sodium salt (IX) by means of NaOEt in EtOH, and finally alkylated with benzyl chloride (X) to provide the target compound.

1 Scott, K.R.; Nicholson, J.M.; Edafiogho, I.O.; Farrar, V.A.; Hinko, C.N.; Moore, J.A.; Imidooxy anticonvulsants: Structural analogs with special emphasis on N-(benzyloxy)-2-azaspiro[4,4]nonane-1,3-dione. Drugs Fut 1992, 17, 5, 395.
中间体序号 中间体编号 品名 CAS号 分子式 供应商 用于合成
(I) 15113 cyclopentanone 120-92-3 C5H8O 详情 详情
(II) 11877 Cyanoacetic acid ethyl ester; Ethyl 2-cyanoacetate; Ethyl cyanoacetate; Ethyl isocyanacetate 105-56-6 C5H7NO2 详情 详情
(III) 43191 ethyl 2-cyano-2-cyclopentylideneacetate 5407-83-0 C10H13NO2 详情 详情
(IV) 43192 1-(cyanomethyl)cyclopentanecarbonitrile C8H10N2 详情 详情
(V) 43193 1-(carboxymethyl)cyclopentanecarboxylic acid C8H12O4 详情 详情
(VI) 27158 2-oxaspiro[4.4]nonane-1,3-dione C8H10O3 详情 详情
(VII) 14640 O-benzylhydroxylamine; 1-[(aminooxy)methyl]benzene 622-33-3 C7H9NO 详情 详情
(VIII) 43194 2-hydroxy-2-azaspiro[4.4]nonane-1,3-dione C8H11NO3 详情 详情
(IX) 43195 sodium 1,3-dioxo-2-azaspiro[4.4]nonan-2-olate C8H10NNaO3 详情 详情
(X) 19171 1-(Chloromethyl)benzene; Benzyl chloride 100-44-7 C7H7Cl 详情 详情
Extended Information