Diisopropylethylamine → 4-((6-(3-Chloro-4-(3-methyl-1,2,4-oxadiazol-5-yl)phenyl)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)methoxy)-7-methoxyquinoline

HRID 40190Notes

Reaction equation

HRID 40190 reaction equation
CN(C(O[N:9]1N=N[C:11]2C=CC=[N:15][C:10]1=2)=[N+](C)C)C.F[P-](F)(F)(F)(F)F.[Cl:25][C:26]1[CH:34]=[C:33]([C:35]2[CH:36]=[CH:37][C:38]3[N:39]([C:41]([CH2:44][O:45][C:46]4[C:55]5[C:50](=[CH:51][C:52]([O:56][CH3:57])=[CH:53][CH:54]=5)[N:49]=[CH:48][CH:47]=4)=[N:42][N:43]=3)[N:40]=2)[CH:32]=[CH:31][C:27]=1[C:28](O)=[O:29].CCN(C(C)C)C(C)C.O/N=C(\N)/C>CN(C=O)C.O>[Cl:25][C:26]1[CH:34]=[C:33]([C:35]2[CH:36]=[CH:37][C:38]3[N:39]([C:41]([CH2:44][O:45][C:46]4[C:55]5[C:50](=[CH:51][C:52]([O:56][CH3:57])=[CH:53][CH:54]=5)[N:49]=[CH:48][CH:47]=4)=[N:42][N:43]=3)[N:40]=2)[CH:32]=[CH:31][C:27]=1[C:28]1[O:29][N:15]=[C:10]([CH3:11])[N:9]=1

Participants

7

Reactant 4

HCID 81531DiisopropylethylamineHCID 5487681(E)-N'-HydroxyacetimidamideHCID 9886157Methanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 250657522-Chloro-4-(3-((7-methoxyquinolin-4-yloxy)methyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)benzoic acid

Product 1

HCID 250659724-((6-(3-Chloro-4-(3-methyl-1,2,4-oxadiazol-5-yl)phenyl)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)methoxy)-7-methoxyquinoline

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent2×

Conditions

Temperature
150 °C

Procedure

HATU (0.370 g, 0.974 mmol) and 2-chloro-4-(3-((7-methoxyquinolin-4-yloxy)methyl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)benzoic acid (0.300 g, 0.650 mmol) were taken up in DMF (5 mL). Added Hunig's Base (0.339 ml, 1.95 mmol). Stirred for 10 min. Added (Z)—N′-hydroxyacetamidine (0.289 g, 3.90 mmol). Stirred for an additional 30 min. Removed DMF in vacuo. Suspended in water. Isolated product by filtration. The resulting solid was allowed to try under vacuum. Split into 3 portions and separately took up in dioxane (4 mL) in a microwave tube and heated for 12 min at 150° C. Combined all 3 reactions. Concentrated. Purified on RPHPLC. Took fractions containing product and made basic with 9% sodium carbonate. Removed volatiles in vacuo. Product crashed out and was isolated by filtration. MS m/z=500.0 [M+1]+. Calc'd for C25H18ClN7O3: 499.1.

Workup

  1. stirringStirred for an additional 30 min
  2. filtrationIsolated product by filtration
  3. customSplit into 3 portions
  4. customseparately took up in dioxane (4 mL) in a microwave tube
  5. concentrationConcentrated
  6. customPurified on RPHPLC
  7. additionTook fractions containing product
  8. customwas isolated by filtration

Sources & evidence

ORD record
ord-3def58bf03d5450480cb2e188c9196bd
Source dataset
uspto-grants-2013_09
Patent number
US08524900B2

Reaction notes

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