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Citric Acid → 4-{[Bis(benzyloxy)phosphoryl]oxy}-3,3-dimethylbutanoic acid

HRID 2238324
ノート
印刷プレビュー

反応式

HRID 2238324 の反応式
[P:1]([O:19][CH2:20][C:21]([CH3:26])([CH3:25])[CH2:22][CH2:23][OH:24])([O:11][CH2:12][C:13]1[CH:18]=[CH:17][CH:16]=[CH:15][CH:14]=1)([O:3][CH2:4][C:5]1[CH:10]=[CH:9][CH:8]=[CH:7][CH:6]=1)=[O:2].[Cr](O[Cr]([O-])(=O)=O)([O-])(=O)=[O:28].[NH+]1C=CC=CC=1.[NH+]1C=CC=CC=1.C(O)(=O)CC(CC(O)=O)(C(O)=O)O>CN(C=O)C>[CH2:4]([O:3][P:1]([O:19][CH2:20][C:21]([CH3:26])([CH3:25])[CH2:22][C:23]([OH:28])=[O:24])([O:11][CH2:12][C:13]1[CH:14]=[CH:15][CH:16]=[CH:17][CH:18]=1)=[O:2])[C:5]1[CH:6]=[CH:7][CH:8]=[CH:9][CH:10]=1
参加物実験手順後処理出典と根拠反応ノート

参加物

5

反応物 3

HCID 311Citric AcidHCID 2724130Cornforth reagentHCID 54009748Dibenzyl 4-hydroxy-2,2-dimethylbutyl phosphate

生成物 1

HCID 540936554-{[Bis(benzyloxy)phosphoryl]oxy}-3,3-dimethylbutanoic acid収率 85.1%

試薬・触媒・溶媒 1

HCID 6228Dimethylformamide溶媒

実験手順

To a solution of the product from Example 9B (0.396 g, 1.0 mmol) in DMF (10 mL) at room temperature was added pyridinium dichromate (2.3 g), and the mixture was stirred for 48 hours. 10% citric acid was added and the reaction was extracted twice with ethyl acetate. The combined organic layer was washed with brine, dried over MgSO4, filtered and evaporated. The residue was purified by chromatography on silica gel, eluting with a gradient of 0-5% methanol in chloroform, to give the title compound (0.334 g, 81%).

後処理

  1. extractionthe reaction was extracted twice with ethyl acetate
  2. washThe combined organic layer was washed with brine
  3. dry with materialdried over MgSO4
  4. filtrationfiltered
  5. customevaporated
  6. customThe residue was purified by chromatography on silica gel
  7. washeluting with a gradient of 0-5% methanol in chloroform

出典と根拠

ORDレコード
ord-0e2801dec9ce4adcba9fa9feaf7f5152
出典データセット
uspto-grants-2010_05
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US07718633B2

反応ノート

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