Ammonium Hydroxide → 2-(4-(4-((6-Aminopyridazin-3-yl)sulfonyl)piperazin-1-yl)phenyl)-1,1,1,3,3,3-hexafluoro-2-propanol

HRID 1972534Notes

Reaction equation

Cl[C:2]1[N:7]=[N:6][C:5]([S:8]([N:11]2[CH2:16][CH2:15][N:14]([C:17]3[CH:22]=[CH:21][C:20]([C:23]([OH:32])([C:28]([F:31])([F:30])[F:29])[C:24]([F:27])([F:26])[F:25])=[CH:19][CH:18]=3)[CH2:13][CH2:12]2)(=[O:10])=[O:9])=[CH:4][CH:3]=1.[OH-].[NH4+:34]>CCO>[NH2:34][C:2]1[N:7]=[N:6][C:5]([S:8]([N:11]2[CH2:16][CH2:15][N:14]([C:17]3[CH:22]=[CH:21][C:20]([C:23]([OH:32])([C:28]([F:31])([F:30])[F:29])[C:24]([F:27])([F:26])[F:25])=[CH:19][CH:18]=3)[CH2:13][CH2:12]2)(=[O:10])=[O:9])=[CH:4][CH:3]=1

Participants

Conditions

Temperature: 110 °C

Procedure

To a 2 mL microwave vial was added 2-(4-(4-((6-chloropyridazin-3-yl)sulfonyl)piperazin-1-yl)phenyl)-1,1,1,3,3,3-hexafluoropropan-2-ol (50 mg, 0.099 mmol), EtOH (1.0 mL) and ammonium hydroxide (2.0 mL, 51 mmol). The solution was heated in an Emrys Optimizer microwave reactor (Personal Chemistry, Biotage AB, Inc., Uppsala, Sweden) at 110° C. for 1 h and then concentrated. The resulting material was purified by silica gel chromatography (0 to 4% MeOH in CH2Cl2) to afford 2-(4-(4-((6-aminopyridazin-3-yl)sulfonyl)piperazin-1-yl)phenyl)-1,1,1,3,3,3-hexafluoro-2-propanol (29 mg) as a white solid. 1H NMR (400 MHz, DMSO-d6) δ 8.40 (s, 1H), 7.67 (d, J=9.4 Hz, 1H), 7.47 (d, J=8.6 Hz, 2H), 7.28 (s, 2H), 7.02 (d, J=9.0 Hz, 2H), 6.89 (d, J=9.2 Hz, 1H), 3.29-3.33 (m, 4H), 3.22-3.28 (m, 4H). m/z (ESI, +ve ion) 485.9 (M+H)+. GK-GKRP IC50 (Binding)=0.285 μM; GK-GKRP EC50 (LC MS/MS-2)=0.302 μM.

Workup

concentrationconcentrated
customThe resulting material was purified by silica gel chromatography (0 to 4% MeOH in CH2Cl2)

Sources & evidence

ORD record: ord-ff912096557048a493589630f3deaf5d
Source dataset: uspto-grants-2013_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08431563B2

Reaction notes

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