Sodium Methoxide → 8-Ethoxy-4-hydroxy-3-(2,4,6-trimethyl-phenyl)-1,8-diaza-spiro[4.5]dec-3-en-2-one

HRID 1962365

反応式

HRID 1962365 の反応式
C[O:2][C:3]([C:5]1([NH:14][C:15](=[O:26])[CH2:16][C:17]2[C:22]([CH3:23])=[CH:21][C:20]([CH3:24])=[CH:19][C:18]=2[CH3:25])[CH2:10][CH2:9][N:8]([O:11][CH2:12][CH3:13])[CH2:7][CH2:6]1)=O.C[O-].[Na+]>CN(C)C=O.[Cl-].[Na+].O>[CH2:12]([O:11][N:8]1[CH2:9][CH2:10][C:5]2([NH:14][C:15](=[O:26])[C:16]([C:17]3[C:22]([CH3:23])=[CH:21][C:20]([CH3:24])=[CH:19][C:18]=3[CH3:25])=[C:3]2[OH:2])[CH2:6][CH2:7]1)[CH3:13]

参加物

5

反応物 2

HCID 10942334Sodium MethoxideHCID 596145921-Ethoxy-4-[2-(2,4,6-trimethyl-phenyl)-acetylamino]-piperidine-4-carboxylic acid methyl ester

生成物 1

HCID 596145818-Ethoxy-4-hydroxy-3-(2,4,6-trimethyl-phenyl)-1,8-diaza-spiro[4.5]dec-3-en-2-one収率 24.3%

試薬・触媒・溶媒 2

HCID 6228Dimethylformamide溶媒HCID 57417360Sodium chloride; water溶媒

反応条件

温度
65 °C

実験手順

To a solution of 2.3 g of 1-ethoxy-4-[2-(2,4,6-trimethyl-phenyl)-acetylamino]-piperidine-4-carboxylic acid methyl ester in 26 ml of dimethylformamide was added 3 g of sodium methoxide. The reaction mixture was heated to 65° C. and stirred for 5 hours. The reaction mixture was poured into brine, neutralized and extracted with ethyl acetate. The organic phase was washed with brine, dried with sodium sulfate, filtered and concentrated. The residue was subjected to column chromatography (heptane/ethyl acetate 2:1) to yield 510 mg of 8-ethoxy-4-hydroxy-3-(2,4,6-trimethyl-phenyl)-1,8-diaza-spiro[4.5]dec-3-en-2-one (compound C8) as a solid, mp: >250° C.

後処理

  1. extractionextracted with ethyl acetate
  2. washThe organic phase was washed with brine
  3. dry with materialdried with sodium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated

出典と根拠

ORDレコード
ord-1500ab0208b248229a0d804bfbf65ad4
出典データセット
uspto-grants-2013_04
特許番号
US08415369B2

関連ノート

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