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Sodium Chloride → (6R,7R)-7-benzyloxycarbonylamino-2,2-dimethyl-1-aza-3-oxabicyclo[4.2.0]octan-8-one

HRID 235732
ノート
印刷プレビュー

反応式

HRID 235732 の反応式
[CH2:1]([O:8][C:9]([NH:11][C@@H:12]1[C@@H:15]([CH2:16][CH2:17][OH:18])[NH:14][C:13]1=[O:19])=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.CO[C:22](OC)([CH3:24])[CH3:23].B(F)(F)F.CCOCC.C(=O)(O)[O-].[Na+].[Cl-].[Na+]>C(Cl)Cl>[CH2:1]([O:8][C:9]([NH:11][C@H:12]1[C:13](=[O:19])[N:14]2[C@@H:15]1[CH2:16][CH2:17][O:18][C:22]2([CH3:24])[CH3:23])=[O:10])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1
参加物反応条件実験手順後処理出典と根拠反応ノート

参加物

7

反応物 5

HCID 5234Sodium ChlorideHCID 64952,2-DimethoxypropaneHCID 8000Boron trifluoride etherateHCID 516892Sodium BicarbonateHCID 13744723(3R,4R)-3-benzyloxycarbonylamino-4-(2-hydroxyethyl)azetidin-2-one

生成物 1

HCID 13744719(6R,7R)-7-benzyloxycarbonylamino-2,2-dimethyl-1-aza-3-oxabicyclo[4.2.0]octan-8-one

試薬・触媒・溶媒 1

HCID 6344Dichloromethane溶媒2 回

反応条件

温度
0 °C

実験手順

To a suspension of (3R,4R)-3-benzyloxycarbonylamino-4-(2-hydroxyethyl)azetidin-2-one (735 mg) in methylene chloride (30 ml) were added 2,2-dimethoxypropane (0.513 ml) and boron trifluoride etherate (0.026 ml) at 0° C. The mixture was stirred for 10 minutes at 0° C. and for 5 hours at ambient temperature. The reaction mixture was poured into a mixture of methylene chloride (30 ml) and aqueous sodium bicarbonate and sodium chloride (1:1). The organic layer was separated and the aqueous layer was extracted with methylene chloride (20 ml). The combined organic layers were washed with brine, dried over magnesium sulfate, and evaporated in vacuo. The residue was chromatographed on silica gel (16 g) eluting with a mixture of methylene chloride and acetone (10:1-5:1) to give (6R,7R)-7-benzyloxycarbonylamino-2,2-dimethyl-1-aza-3-oxabicyclo[4.2.0]octan-8-one (753 mg) as an oil.

後処理

  1. customThe organic layer was separated
  2. extractionthe aqueous layer was extracted with methylene chloride (20 ml)
  3. washThe combined organic layers were washed with brine
  4. dry with materialdried over magnesium sulfate
  5. customevaporated in vacuo
  6. customThe residue was chromatographed on silica gel (16 g)
  7. washeluting with a mixture of methylene chloride and acetone (10:1-5:1)

出典と根拠

ORDレコード
ord-e1c141a90c3c4e2b86b1b3bf97e2c08c
出典データセット
uspto-grants-1987_02
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US04640915

反応ノート

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このページの内容参加物反応条件実験手順後処理出典と根拠反応ノート