Water → HCID 67796345、化合物

HRID 21716ノート

反応式

HRID 21716 の反応式
Cl[CH2:2][C:3]([C@H:5]1[N:8]([CH:9]([CH2:19][C:20]2[CH:25]=[CH:24][C:23]([O:26][CH3:27])=[CH:22][CH:21]=2)[CH2:10][C:11]2[CH:16]=[CH:15][C:14]([O:17][CH3:18])=[CH:13][CH:12]=2)[C:7](=[O:28])[C@@H:6]1[C@H:29]([O:31][C:32]([O:34][CH2:35][C:36]1[CH:41]=[CH:40][CH:39]=[CH:38][CH:37]=1)=[O:33])[CH3:30])=[CH2:4].O.C1(C)C=CC(S(O)(=O)=[O:50])=CC=1.P(=O)(O)(O)O>CS(C)=O.C(OCC)(=O)C>[OH:50][CH2:2][C:3]([C@H:5]1[N:8]([CH:9]([CH2:19][C:20]2[CH:25]=[CH:24][C:23]([O:26][CH3:27])=[CH:22][CH:21]=2)[CH2:10][C:11]2[CH:16]=[CH:15][C:14]([O:17][CH3:18])=[CH:13][CH:12]=2)[C:7](=[O:28])[C@@H:6]1[C@H:29]([O:31][C:32]([O:34][CH2:35][C:36]1[CH:41]=[CH:40][CH:39]=[CH:38][CH:37]=1)=[O:33])[CH3:30])=[CH2:4]

参加物

7

反応物 4

HCID 962WaterHCID 1004Phosphoric AcidHCID 6101p-Toluenesulfonic acidHCID 67796056(3S,4S)-4-(1-chloromethylethenyl)-3-(1-(R)-benzyloxycarbonyloxyethyl)-1-di(p-anisyl)methyl-2-azetidinone

生成物 1

HCID 67796345HCID 67796345、化合物

試薬・触媒・溶媒 2

HCID 679Dimethyl Sulfoxide溶媒HCID 8857Ethyl Acetate溶媒

実験手順

To a solution of (3S,4S)-4-(1-chloromethyl-ethenyl)-3-(1-(R)-benzyloxycarbonyloxyethyl)-1-di(p-anisyl)methyl-2-azetidinone (20 g) in dimethylsulfoxide (160 ml), there were successively added water (40 ml), cuprous oxide (6.76 g) and p-toluenesulfonic acid (7.6 g), and the resultant mixture was warmed to 50° to 55° C. and stirred for 2 hours at the same temperature. After cooling down to room temperature, 1% aqueous phosphoric acid (90 ml) and ethyl acetate (200 ml) were poured into the reaction mixture, followed by stirring for 0.5 hour. An insoluble material was removed by filtration over celite and washed 3 times with ethyl acetate (20 ml). The filtrate and the washings were combined together, and the aqueous layer was separated from the organic layer and extracted with ethyl acetate (200 ml). The organic layer and the extract were combined together, washed with brine and dried over anhydrous sodium sulfate. After filtration, the filtrate was concentrated in vacuo, and the concentrate was crystallized from a mixture of toluene and n-hexane (1:1) to give crystals of (3S,4S)-4-(1-hydroxymethylethenyl)-3-(1-(R)-benzyloxycarbonyloxyethyl)-1-di(p-anisyl)methyl-2-azetidinone. m.p., 118°-120° C.

後処理

  1. stirringby stirring for 0.5 hour
  2. customAn insoluble material was removed by filtration over celite
  3. washwashed 3 times with ethyl acetate (20 ml)
  4. customthe aqueous layer was separated from the organic layer
  5. extractionextracted with ethyl acetate (200 ml)
  6. washwashed with brine
  7. dry with materialdried over anhydrous sodium sulfate
  8. filtrationAfter filtration
  9. concentrationthe filtrate was concentrated in vacuo
  10. customthe concentrate was crystallized from a mixture of toluene and n-hexane (1:1)

出典と根拠

ORDレコード
ord-4eddb2e4e3b64314ab38ee9674cdc374
出典データセット
uspto-grants-1995_06
特許番号
US05424422

反応ノート

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