Dimethylformamide → N6,n6-diethyl-8-methyl-1,2,4-triazolo[4,3-b]pyridazine-3,6-diamine

HRID 217678

반응식

HRID 217678 반응식
Br.Cl[C:3]1[CH:4]=[C:5]([CH3:13])[C:6]2[N:7]([C:9]([NH2:12])=[N:10][N:11]=2)[N:8]=1.CN(C=O)C.[CH2:19]([NH:21][CH2:22][CH3:23])[CH3:20]>O>[CH2:19]([N:21]([CH2:22][CH3:23])[C:3]1[CH:4]=[C:5]([CH3:13])[C:6]2[N:7]([C:9]([NH2:12])=[N:10][N:11]=2)[N:8]=1)[CH3:20]

참가 물질

5

반응물 3

HCID 6228DimethylformamideHCID 8021DiethylamineHCID 866507966-Chloro-8-methyl-[1,2,4]triazolo[4,3-b]pyridazin-3-ylamine hydrobromide

생성물 1

HCID 58136920N6,n6-diethyl-8-methyl-1,2,4-triazolo[4,3-b]pyridazine-3,6-diamine

시약·촉매·용매 1

HCID 962Water용매

실험 절차

6-Chloro-8-methyl-[1,2,4]triazolo[4,3-b]pyridazin-3-ylamine hydrobromide (W2.002; 250 mg) was dissolved in abs. DMF (2 ml) and admixed with diethylamine (7 ml). Thereafter, the reaction mixture was placed into a heating block at 80° C. with stirring for 11 days. The solvent was then drawn off and the residue was admixed with a little water and extracted three times with dichloromethane. The combined organic phases were dried over sodium sulfate, filtered and concentrated. The residue was purified by means of preparative HPLC (met. A), and the clean product fractions were combined, freed of the acetonitrile under reduced pressure, alkalized with saturated potassium carbonate solution and extracted repeatedly with dichloromethane. The combined organic phases were dried over sodium sulfate, filtered and concentrated. 100 mg of the title compound were obtained.

후처리

  1. customwas placed into a heating block at 80° C.
  2. extractionextracted three times with dichloromethane
  3. dry with materialThe combined organic phases were dried over sodium sulfate
  4. filtrationfiltered
  5. concentrationconcentrated
  6. customThe residue was purified by means of preparative HPLC (
  7. extractionextracted repeatedly with dichloromethane
  8. dry with materialThe combined organic phases were dried over sodium sulfate
  9. filtrationfiltered
  10. concentrationconcentrated

출처 및 근거

ORD 기록
ord-3a65638af6fd48d88d2ea7b7ca94b982
출처 데이터셋
uspto-grants-2012_06
특허 번호
US08198272B2

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