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Water → Methyl alpha-(3xi-carbobenzoxy-2-phenylacetyl-7-oxo-4-oxa-2,6-diazabicyclo[3.2.0]heptan-6-yl)-alpha-isopropylideneacetate

HRID 2287178
ノート
印刷プレビュー

反応式

HRID 2287178 の反応式
[C:1]([CH:11]1[O:17][CH:16]2[CH:13]([C:14](=[O:26])[N:15]2[C:18](=[C:23]([CH3:25])[CH3:24])[C:19]([O:21][CH3:22])=[O:20])[NH:12]1)([O:3][CH2:4][C:5]1[CH:10]=[CH:9][CH:8]=[CH:7][CH:6]=1)=[O:2].C(N(CC)CC)C.[C:34]1([CH2:40][C:41](Cl)=[O:42])[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=1.O>O1CCCC1>[C:1]([CH:11]1[O:17][CH:16]2[C:13]([C:41](=[O:42])[CH2:40][C:34]3[CH:39]=[CH:38][CH:37]=[CH:36][CH:35]=3)([C:14](=[O:26])[N:15]2[C:18](=[C:23]([CH3:24])[CH3:25])[C:19]([O:21][CH3:22])=[O:20])[NH:12]1)([O:3][CH2:4][C:5]1[CH:6]=[CH:7][CH:8]=[CH:9][CH:10]=1)=[O:2]
参加物実験手順後処理出典と根拠反応ノート

参加物

6

反応物 4

HCID 962WaterHCID 7679Phenylacetyl chlorideHCID 8471TriethylamineHCID 70561235Methyl alpha-(3xi-carbobenzoxy-7-oxo-4-oxa-2,6-diazabicyclo[3.2.0]heptan-6-yl)-alpha-isopropylideneacetate

生成物 1

HCID 131711533Methyl alpha-(3xi-carbobenzoxy-2-phenylacetyl-7-oxo-4-oxa-2,6-diazabicyclo[3.2.0]heptan-6-yl)-alpha-isopropylideneacetate収率 67.2%

試薬・触媒・溶媒 1

HCID 8028Tetrahydrofuran溶媒

実験手順

To a solution of 4.90 g of methyl α-(3ξ-carbobenzoxy-7-oxo-4-oxa-2,6-diazabicyclo[3.2.0]heptan-6-yl)-α-isopropylideneacetate in 50 ml of tetrahydrofuran are added 2.4 ml of triethylamine and then 2.5 ml of phenylacetyl chloride under ice-cooling, and the mixture stirred for 30 minutes, poured into water and extracted with ethyl acetate. The extract is washed with water dried on magnesium sulfate and concentrated under reduced pressure. The residue is chromatographed on 150 g of silica gel containing 10% water and eluted with benzene containing 10% ethyl acetate to yield 4.37 g of methyl α-(3ξ-carbobenzoxy-2-phenylacetyl-7-oxo-4-oxa-2,6-diazabicyclo[3.2.0]heptan-6-yl)-α-isopropylideneacetate in 67.2% yield.

後処理

  1. extractionextracted with ethyl acetate
  2. washThe extract is washed with water
  3. customdried on magnesium sulfate
  4. concentrationconcentrated under reduced pressure
  5. customThe residue is chromatographed on 150 g of silica gel containing 10% water
  6. washeluted with benzene containing 10% ethyl acetate

出典と根拠

ORDレコード
ord-901b31c4601d4608a822b14fd47692f4
出典データセット
uspto-grants-1981_05
DOI
10.6084/m9.figshare.5104873.v1
特許番号
US04269773

反応ノート

読み込み中…

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