Water → 1-(2-(Trimethylsilyl)ethyl) 1'-tert-butyl 5-(3-ethoxy-2-(ethoxycarbonyl)-3-oxopropyl)spiro[indoline-3,3'-pyrrolidine]-1,1'-dicarboxylate

HRID 1411311ノート

反応式

HRID 1411311 の反応式
[C:1]([O:9][CH2:10][CH3:11])(=[O:8])[CH2:2][C:3]([O:5][CH2:6][CH3:7])=[O:4].[O-]CC.[Na+].Br[CH2:17][C:18]1[CH:19]=[C:20]2[C:26]3([CH2:30][CH2:29][N:28]([C:31]([O:33][C:34]([CH3:37])([CH3:36])[CH3:35])=[O:32])[CH2:27]3)[CH2:25][N:24]([C:38]([O:40][CH2:41][CH2:42][Si:43]([CH3:46])([CH3:45])[CH3:44])=[O:39])[C:21]2=[CH:22][CH:23]=1.O>C(O)C>[CH2:10]([O:9][C:1](=[O:8])[CH:2]([C:3]([O:5][CH2:6][CH3:7])=[O:4])[CH2:17][C:18]1[CH:19]=[C:20]2[C:26]3([CH2:30][CH2:29][N:28]([C:31]([O:33][C:34]([CH3:37])([CH3:35])[CH3:36])=[O:32])[CH2:27]3)[CH2:25][N:24]([C:38]([O:40][CH2:41][CH2:42][Si:43]([CH3:46])([CH3:45])[CH3:44])=[O:39])[C:21]2=[CH:22][CH:23]=1)[CH3:11]

参加物

6

反応物 4

HCID 962WaterHCID 7761Diethyl MalonateHCID 2723922Sodium ethoxideHCID 904495541-(2-(Trimethylsilyl)ethyl) 1'-tert-butyl 5-(bromomethyl)spiro[indoline-3,3'-pyrrolidine]-1,1'-dicarboxylate

生成物 1

HCID 904497891-(2-(Trimethylsilyl)ethyl) 1'-tert-butyl 5-(3-ethoxy-2-(ethoxycarbonyl)-3-oxopropyl)spiro[indoline-3,3'-pyrrolidine]-1,1'-dicarboxylate収率 67%

試薬・触媒・溶媒 1

HCID 702Ethanol溶媒2 回

実験手順

Diethyl malonate (183 mg, 1.14 mmol) was dissolved in ethanol (2 mL). Thereafter, sodium ethoxide (78.0 mg, 1.15 mmol) and an ethanol (2 mL) solution of 1-(2-(trimethylsilyl)ethyl) 1′-tert-butyl 5-(bromomethyl)spiro[indoline-3,3′-pyrrolidine]-1,1′-dicarboxylate (390 mg, 0.76 mmol) were added to the above obtained solution under cooling on ice, and the thus obtained mixture was then stirred at the same temperature as above for 1.5 hours. Thereafter, water was added to the reaction solution, and the mixed solution was then extracted with ethyl acetate. The organic layer was washed with brine, and was then dried over anhydrous sodium sulfate, followed by concentration in vacuo. The obtained residue was purified by silica gel column chromatography (hexane:ethyl acetate=3:1) to obtain 1-(2-(trimethylsilyl)ethyl) 1′-tert-butyl 5-(3-ethoxy-2-(ethoxycarbonyl)-3-oxopropyl)spiro[indoline-3,3′-pyrrolidine]-1,1′-dicarboxylate (300 mg, 67%) in the form of a colorless amorphous product.

後処理

  1. temperatureunder cooling on ice
  2. extractionthe mixed solution was then extracted with ethyl acetate
  3. washThe organic layer was washed with brine
  4. dry with materialwas then dried over anhydrous sodium sulfate
  5. concentrationfollowed by concentration in vacuo
  6. customThe obtained residue was purified by silica gel column chromatography (hexane:ethyl acetate=3:1)

出典と根拠

ORDレコード
ord-dc1bdd164b2a41d5a6fccc64fd84386e
出典データセット
uspto-grants-2014_12
特許番号
US08921576B2

反応ノート

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