Cesium carbonate → Ethyl 8-[(3,3-difluorocyclobutyl)methoxy]-2,6-dimethylimidazo[1,2-a]pyridine-3-carboxylate

HRID 1844174노트

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HRID 1844174 반응식
[OH:1][C:2]1[C:3]2[N:4]([C:9]([C:13]([O:15][CH2:16][CH3:17])=[O:14])=[C:10]([CH3:12])[N:11]=2)[CH:5]=[C:6]([CH3:8])[CH:7]=1.CS(O[CH2:23][CH:24]1[CH2:27][C:26]([F:29])([F:28])[CH2:25]1)(=O)=O.C(=O)([O-])[O-].[Cs+].[Cs+]>CN(C=O)C>[F:28][C:26]1([F:29])[CH2:27][CH:24]([CH2:23][O:1][C:2]2[C:3]3[N:4]([C:9]([C:13]([O:15][CH2:16][CH3:17])=[O:14])=[C:10]([CH3:12])[N:11]=3)[CH:5]=[C:6]([CH3:8])[CH:7]=2)[CH2:25]1

참가 물질

5

반응물 3

HCID 10796Cesium carbonateHCID 582234121132843-09-4HCID 86717883Ethyl 8-hydroxy-2,6-dimethylimidazo[1,2-a]pyridine-3-carboxylate

생성물 1

HCID 86718191Ethyl 8-[(3,3-difluorocyclobutyl)methoxy]-2,6-dimethylimidazo[1,2-a]pyridine-3-carboxylate

시약·촉매·용매 1

HCID 6228Dimethylformamide용매

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온도
60 °C

실험 절차

1.85 g (7.89 mmol) of ethyl 8-hydroxy-2,6-dimethylimidazo[1,2-a]pyridine-3-carboxylate Example 87A and 2.37 g (9.47 mmol) of (3,3-difluorocyclobutyl)methyl methanesulphonate Example 105A were initially charged in 104 ml of DMF, and 10.28 g (31.56 mmol) of caesium carbonate were added. The reaction mixture was stirred at 60° C. overnight. After cooling, the reaction mixture was filtered, the solid was washed thoroughly with ethyl acetate, the filtrate was concentrated and about 150 ml of water were added to the residue. The solid formed was filtered off and dried under high vacuum. This gave 2.51 g (89% of theory; purity 95%) of the title compound.

후처리

  1. temperatureAfter cooling
  2. filtrationthe reaction mixture was filtered
  3. washthe solid was washed thoroughly with ethyl acetate
  4. concentrationthe filtrate was concentrated
  5. additionabout 150 ml of water were added to the residue
  6. customThe solid formed
  7. filtrationwas filtered off
  8. customdried under high vacuum

출처 및 근거

ORD 기록
ord-4fbd1659be474af8b07214e5e99bd258
출처 데이터셋
uspto-grants-2015_02
특허 번호
US08946215B2

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