Hydrochloric Acid → N-{3-[7-(1-piperidin-4-yl-1H-pyrazol-4-yl)imidazo[1,2-b]pyridazin-3-yl]phenyl}-N'-(2,2,2-trifluoroethyl)urea

HRID 407005Notes

Reaction equation

HRID 407005 reaction equation
[F:1][C:2]([F:42])([F:41])[CH2:3][NH:4][C:5]([NH:7][C:8]1[CH:9]=[C:10]([C:14]2[N:18]3[N:19]=[CH:20][C:21]([C:23]4[CH:24]=[N:25][N:26]([CH:28]5[CH2:33][CH2:32][N:31](C(OC(C)(C)C)=O)[CH2:30][CH2:29]5)[CH:27]=4)=[CH:22][C:17]3=[N:16][CH:15]=2)[CH:11]=[CH:12][CH:13]=1)=[O:6].Cl.C[O-].[Na+]>CO.O1CCOCC1>[NH:31]1[CH2:32][CH2:33][CH:28]([N:26]2[CH:27]=[C:23]([C:21]3[CH:20]=[N:19][N:18]4[C:14]([C:10]5[CH:9]=[C:8]([NH:7][C:5]([NH:4][CH2:3][C:2]([F:41])([F:1])[F:42])=[O:6])[CH:13]=[CH:12][CH:11]=5)=[CH:15][N:16]=[C:17]4[CH:22]=3)[CH:24]=[N:25]2)[CH2:29][CH2:30]1

Participants

6

Reactant 3

HCID 313Hydrochloric AcidHCID 10942334Sodium MethoxideHCID 67980046tert-butyl 4-(4-{3-[3-({[(2,2,2-trifluoroethyl)amino]carbonyl}amino)phenyl]imidazo[1,2-b]pyridazin-7-yl}-1H-pyrazol-1-yl)piperidine-1-carboxylate

Product 1

HCID 67980436N-{3-[7-(1-piperidin-4-yl-1H-pyrazol-4-yl)imidazo[1,2-b]pyridazin-3-yl]phenyl}-N'-(2,2,2-trifluoroethyl)urea

Reagents, catalysts & solvents 2

HCID 887MethanolSolvent2×HCID 312751,4-DioxaneSolvent

Procedure

tert-Butyl 4-(4-{3-[3-({[(2,2,2-trifluoroethyl)amino]carbonyl}amino)phenyl]-imidazo[1,2-b]pyridazin-7-yl}-1H-pyrazol-1-yl)piperidine-1-carboxylate (0.965 g, 1.65 mmol) was dissolved in methanol (1.0 mL). To the solution was added 4 N HCl in dioxane (1.5 mL). The mixture was stirred at r.t. for 2 h. The mixture was cooled with ice-water, and was carefully neutralized with sodium methoxide in methanol solution (25% w/w, about 4.375 M, 1.38 mL) to pH about 8. The volatiles were removed under reduced pressure. The residue was dried in vacuo to afford the desired product which contained residual NaCl, and was directly used in next step reaction without further purification. LCMS (M+H)+: m/z=485.2.

Workup

  1. customThe volatiles were removed under reduced pressure
  2. customThe residue was dried in vacuo

Sources & evidence

ORD record
ord-81cf01965b3b4d6d9d3ba0a8daae8cfb
Source dataset
uspto-grants-2014_06
Patent number
US08754114B2

Reaction notes

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