Hydrochloric Acid → HCID 76282929, compound

HRID 1501359Notes

Reaction equation

HRID 1501359 reaction equation
[Cl:1][C:2]1[CH:3]=[CH:4][C:5]2[N:6]([C:8]([C:29]3[CH:34]=[CH:33][CH:32]=[CH:31][CH:30]=3)=[C:9]([C:11]3[CH:16]=[CH:15][C:14]([C:17]4([NH:21]C(=O)OC(C)(C)C)[CH2:20][CH2:19][CH2:18]4)=[CH:13][CH:12]=3)[N:10]=2)[N:7]=1.C(Cl)Cl.Cl.[OH-].[Na+]>CO>[Cl:1][C:2]1[CH:3]=[CH:4][C:5]2[N:6]([C:8]([C:29]3[CH:30]=[CH:31][CH:32]=[CH:33][CH:34]=3)=[C:9]([C:11]3[CH:12]=[CH:13][C:14]([C:17]4([NH2:21])[CH2:18][CH2:19][CH2:20]4)=[CH:15][CH:16]=3)[N:10]=2)[N:7]=1

Participants

6

Reactant 4

HCID 313Hydrochloric AcidHCID 6344DichloromethaneHCID 14798Sodium HydroxideHCID 86716521HCID 86716521, compound

Product 1

HCID 76282929HCID 76282929, compoundYield 68%

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

To a solution of tert-butyl {1-[4-(6-chloro-3-phenylimidazo[1,2-b]pyridazin-2-yl)phenyl]cyclobutyl}carbamate that was prepared in a manner analgous to that described for Intermediate Example Int-6.2 (0.075 g, 0.15 mmol) in MeOH (0.65 mL) and DCM (1.0 mL) was added hydrogen chloride (4 M in dioxane, 0.8 mL, 3.2 mmol, 20.0 eq), and the resulting mixture was stirred at room temperature for 19 h. The resulting mixture was added to ice water (50 mL), made alkaline with aqueous sodium hydroxide (2 N), and extracted with EtOAc (2×50 mL). The combined organic phases were dried (Na2SO4 anh.) and concentrated under reduced pressure. The resulting material was recrystallized using diisopropyl ether to give 1-[4-(6-chloro-3-phenylimidazo[1,2-b]pyridazin-2-yl)phenyl]cyclobutanamine (0.040 g, 68%):

Workup

  1. extractionextracted with EtOAc (2×50 mL)
  2. dry with materialThe combined organic phases were dried (Na2SO4 anh.)
  3. concentrationconcentrated under reduced pressure
  4. customThe resulting material was recrystallized

Sources & evidence

ORD record
ord-c504c5fba3bd4d20a9937459b78b2f84
Source dataset
uspto-grants-2015_12
Patent number
US09206185B2

Reaction notes

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