Triethylamine → HCID 136366422, compound

HRID 1698676Notes

Reaction equation

HRID 1698676 reaction equation
C[O:2][C:3](=O)[N:4]=[C:5](SC)[C:6]([C:20]1[CH:21]=[C:22]([O:30][CH2:31][CH3:32])[C:23]2[O:28][CH2:27][O:26][CH2:25][C:24]=2[CH:29]=1)=[N:7][C:8]1[CH:13]=[CH:12][C:11]([C:14]2[N:18]=[C:17]([CH3:19])[O:16][N:15]=2)=[CH:10][CH:9]=1.[NH:36]([C:38]1[N:43]=[CH:42][CH:41]=[CH:40][N:39]=1)[NH2:37].C(N(CC)CC)C>CN(C=O)C>[CH2:31]([O:30][C:22]1[C:23]2[O:28][CH2:27][O:26][CH2:25][C:24]=2[CH:29]=[C:20]([CH:6]([NH:7][C:8]2[CH:9]=[CH:10][C:11]([C:14]3[N:18]=[C:17]([CH3:19])[O:16][N:15]=3)=[CH:12][CH:13]=2)[C:5]2[NH:4][C:3](=[O:2])[N:36]([C:38]3[N:43]=[CH:42][CH:41]=[CH:40][N:39]=3)[N:37]=2)[CH:21]=1)[CH3:32]

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 3465582-HydrazinylpyrimidineHCID 72312840HCID 72312840, compound

Product 1

HCID 136366422HCID 136366422, compoundYield 45.9%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
85 °C

Procedure

To a solution of 105 mg of {2-(8-ethoxy-4H-benzo[1,3]dioxin-6-yl)-2-[4-(5-methyl-[1,2,4]oxadiazol-3-yl)phenylimino]-1-methylsulfanylethylidene}carbamic acid methyl ester in 2 ml of DMF there were added 20.9 mg of 2-hydrazinopyrimidine and 50 μl of triethylamine, and the mixture was stirred overnight at 85° C. under a nitrogen atmosphere. The reaction mixture was concentrated, and the residue was dissolved in 3 ml of methanol and 0.3 ml of acetic acid. After adding 100 mg of sodium cyanotrihydroborate to the solution, the mixture was stirred at room temperature for 1 hour. Water was added to the reaction mixture and extraction was performed with ethyl acetate. The organic layer was dried over anhydrous magnesium sulfate. The desiccating agent was filtered off and the filtrate was concentrated under reduced pressure. The residue was purified by NAM silica gel column chromatography (methanol-ethyl acetate) to give 5-{(8-ethoxy-4H-benzo[1,3]dioxin-6-yl)-[4-(5-methyl-[1,2,4]oxadiazol-3-yl)phenylamino]methyl}-2-pyrimidin-2-yl-2,4-dihydro-[1,2,4]triazol-3-one (46 mg).

Workup

  1. concentrationThe reaction mixture was concentrated
  2. dissolutionthe residue was dissolved in 3 ml of methanol
  3. additionAfter adding 100 mg of sodium cyanotrihydroborate to the solution
  4. stirringthe mixture was stirred at room temperature for 1 hour
  5. additionWater was added to the reaction mixture and extraction
  6. dry with materialThe organic layer was dried over anhydrous magnesium sulfate
  7. filtrationThe desiccating agent was filtered off
  8. concentrationthe filtrate was concentrated under reduced pressure
  9. customThe residue was purified by NAM silica gel column chromatography (methanol-ethyl acetate)

Sources & evidence

ORD record
ord-65fdd3168a584bb28beb88bcf7eb118e
Source dataset
uspto-grants-2012_04
Patent number
US08163787B2

Reaction notes

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