Dimethyl Sulfoxide → N-(5,8-Dimethoxy[1,2,4]triazolo-[1,5-c]pyrimidin 2-yl)-2-methoxy-4-(trifluoromethyl)-3-pyridinesulfonamide

HRID 342386노트

반응식

HRID 342386 반응식
[NH2:1][C:2]1[N:10]=[C:9]2[N:4]([C:5]([O:13][CH3:14])=[N:6][CH:7]=[C:8]2[O:11][CH3:12])[N:3]=1.[CH3:15][O:16][C:17]1[C:22]([S:23](Cl)(=[O:25])=[O:24])=[C:21]([C:27]([F:30])([F:29])[F:28])[CH:20]=[CH:19][N:18]=1.N1C=CC=CC=1.CS(C)=O>ClCCl.C(#N)C>[CH3:14][O:13][C:5]1[N:4]2[N:3]=[C:2]([NH:1][S:23]([C:22]3[C:17]([O:16][CH3:15])=[N:18][CH:19]=[CH:20][C:21]=3[C:27]([F:30])([F:28])[F:29])(=[O:24])=[O:25])[N:10]=[C:9]2[C:8]([O:11][CH3:12])=[CH:7][N:6]=1

참가 물질

7

반응물 4

HCID 679Dimethyl SulfoxideHCID 1049Pyridine3회HCID 114468885,8-Dimethoxy-[1,2,4]triazolo[1,5-c]pyrimidin-2-amineHCID 185397982-Methoxy-4-(trifluoromethyl)pyridine-3-sulfonyl chloride2회

생성물 1

HCID 18366179N-(5,8-Dimethoxy[1,2,4]triazolo-[1,5-c]pyrimidin 2-yl)-2-methoxy-4-(trifluoromethyl)-3-pyridinesulfonamide

시약·촉매·용매 2

HCID 6342Acetonitrile용매HCID 6344Dichloromethane용매

실험 절차

A mixture of 0.75 g (93.8 mmol) of 2-amino-5,8-dimethoxy[1,2,4]triazolo[1,5-c]pyrimidine, 2.1 g (7.6 mmol) of 2-methoxy-4-(trifluoromethyl)pyridine-3-sulfonyl chloride, and 10 mL of dry acetonitrile was prepared and to this was added at ambient temperature with stirring and means to exclude moisture from the system 0.61 mL (7.6 mmol) of dry pyridine, 43 microliters (0.6 mmol) of dry dimethyl sulfoxide, and a small quantity of dry 4A molecular sieves. The mixture was stirred for 5 days. Another 1.0 g (3.4 mmol) of 2-methoxy-4-(trifluoromethyl) pyridine-3-sulfonyl chloride and 0.30 mL (3.5 mmol) of dry pyridine were added and the mixture stirred another 2 days. Another 0.30 mL (3.5 mmol) of dry pyridine was added and stirring continued for 4 more days. The mixture was then diluted with 100 mL of dichloromethane and the resulting mixture was washed with 2×100 mL of 2N aqueous hydrochloric acid, dried over magnesium sulfate, and concentrated by evaporation under reduced pressure. The tan solid residue was chromatographed on silica gel eluting with a mixture of dichloromethane and ethanol to obtain 0.90 g (54 percent of theory) of the title compound as a white solid melting at 214°-216° C.

후처리

  1. customwas prepared
  2. additionto this was added at ambient temperature
  3. dry with materiala small quantity of dry 4A molecular sieves
  4. stirringThe mixture was stirred for 5 days
  5. stirringthe mixture stirred another 2 days
  6. stirringstirring
  7. washthe resulting mixture was washed with 2×100 mL of 2N aqueous hydrochloric acid
  8. dry with materialdried over magnesium sulfate
  9. concentrationconcentrated by evaporation under reduced pressure
  10. customThe tan solid residue was chromatographed on silica gel eluting with a mixture of dichloromethane and ethanol

출처 및 근거

ORD 기록
ord-7f7a527625d34bf4ba3c29dc5e9cc56b
출처 데이터셋
uspto-grants-1999_01
특허 번호
US05858924

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