2,6-Diethylaniline → HCID 86653101, compound

HRID 81970

Reaction equation

HRID 81970 reaction equation
[I:1][C:2]1[N:11]=[CH:10][C:9]2[CH2:8][CH2:7][C:6]3[C:12]([C:16]([O:18]CC)=O)=[N:13][N:14]([CH3:15])[C:5]=3[C:4]=2[N:3]=1.[OH-].[K+].C(N(C(C)C)C(C)C)C.F[B-](F)(F)F.N1(OC(N(C)C)=[N+](C)C)C2C=CC=CC=2N=N1.[CH2:54]([C:56]1[CH:62]=[CH:61][CH:60]=[C:59]([CH2:63][CH3:64])[C:57]=1[NH2:58])[CH3:55]>C(O)C>[CH2:54]([C:56]1[CH:62]=[CH:61][CH:60]=[C:59]([CH2:63][CH3:64])[C:57]=1[NH:58][C:16]([C:12]1[C:6]2[CH2:7][CH2:8][C:9]3[CH:10]=[N:11][C:2]([I:1])=[N:3][C:4]=3[C:5]=2[N:14]([CH3:15])[N:13]=1)=[O:18])[CH3:55]

Participants

7

Reactant 5

HCID 113692,6-DiethylanilineHCID 14797Potassium HydroxideHCID 81531DiisopropylethylamineHCID 2733207O-(Benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium tetrafluoroborateHCID 44232943ethyl 8-iodo-1-methyl-4,5-dihydro-1H-pyrazolo[4,3-h]quinazoline-3-carboxylate

Product 1

HCID 86653101HCID 86653101, compound

Reagents, catalysts & solvents 1

HCID 702EthanolSolvent

Procedure

Ethyl 8-iodo-1-methyl-4,5-dihydro-1H-pyrazolo[4,3-h]quinazoline-3-carboxylate (4.0 g, 10.4 mmol) prepared as described in WO2004/104007 was dissolved in anhydrous ethanol (150 mL) and treated with potassium hydroxide (5.83 g, 104 mmol.) at RT for 24 hour. The white precipitate formed during the reaction was collected by filtration. The solid was then suspended in anhydrous dimethylformamide (5.0 mL) and treated with N-ethyl-N,N-diisopropylamine (10 ml) and O-(Benzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium tetrafluoroborate (TBTU) (4.5 g, 14.1 mmol). The mixture was then treated with 2,6-diethylaniline (2.3 ml, 14.1 mmol) and stirred at room temperature overnight. The solvent was removed under reduced pressure and the crude was purified by column chromatography to afford the title compound.

Workup

  1. customThe white precipitate formed during the reaction
  2. filtrationwas collected by filtration
  3. customThe solvent was removed under reduced pressure
  4. customthe crude was purified by column chromatography

Sources & evidence

ORD record
ord-059465ba97fd4bd59d5555eae22fd6f4
Source dataset
uspto-grants-2014_09
Patent number
US08846701B2

Linked notes

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