Water → Atamestane

HRID 1415856

반응식

HRID 1415856 반응식
I[C@H:2]1[C@H:19]([CH3:20])[C@@:18]2([CH3:21])[C:5]([CH2:6][CH2:7][C@@H:8]3[C@@H:17]2[CH2:16][CH2:15][C@@:13]2([CH3:14])[C@H:9]3[CH2:10][CH2:11][C:12]2=[O:22])=[CH:4][C:3]1=[O:23].C(=O)([O-])[O-].[Li+].[Li+].O>CN(C)C=O>[CH3:20][C:19]1[C@@:18]2([CH3:21])[C:5]([CH2:6][CH2:7][C@@H:8]3[C@@H:17]2[CH2:16][CH2:15][C@@:13]2([CH3:14])[C@H:9]3[CH2:10][CH2:11][C:12]2=[O:22])=[CH:4][C:3](=[O:23])[CH:2]=1

참가 물질

5

반응물 3

HCID 962WaterHCID 11125Lithium CarbonateHCID 111443782beta-Iodo-1alpha-methylandrost-4-ene-3,17-dione

생성물 1

HCID 57050Atamestane

시약·촉매·용매 1

HCID 6228Dimethylformamide용매

실험 절차

2.13 g (5 mmol) of 2β-iodo-1α-methylandrost-4-ene-3,17-dione from a) is introduced to a suspension, preheated to 130° C., of 0.73 g (10 mmol) of lithium carbonate in 10 ml of dimethylformamide and stirred at this temperature for 1.5 hours. After cooling, the reaction solution is added to 30 ml of water, extracted with ethyl acetate and after drying on sodium sulfate is concentrated by evaporation. The crude product is chromatographed on silica gel with ethyl acetate/hexane as mobile solvent. After recrystallization from ethyl acetate, 1.1 g of 1-methylandrosta-1,4-diene-3,17-dione (74% of theory) of a melting point of 169° C. is obtained.

후처리

  1. temperatureAfter cooling
  2. extractionextracted with ethyl acetate
  3. customafter drying on sodium sulfate
  4. concentrationis concentrated by evaporation
  5. customThe crude product is chromatographed on silica gel with ethyl acetate/hexane as mobile solvent
  6. customAfter recrystallization from ethyl acetate, 1.1 g of 1-methylandrosta-1,4-diene-3,17-dione (74% of theory) of a melting point of 169° C.
  7. customis obtained

출처 및 근거

ORD 기록
ord-b8f210a7cc8143f7a6fd78c2ae75cbd8
출처 데이터셋
uspto-grants-1999_06
특허 번호
US05908944

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