Sodium Hydroxide → [4-(6-Phenethylsulfanylpyridazin-3-YL)piperazin-1-YL](2-trifluoromethylphenyl)methanone

HRID 1684997Notes

Reaction equation

Cl[C:2]1[N:7]=[N:6][C:5]([N:8]2[CH2:13][CH2:12][N:11]([C:14]([C:16]3[CH:21]=[CH:20][CH:19]=[CH:18][C:17]=3[C:22]([F:25])([F:24])[F:23])=[O:15])[CH2:10][CH2:9]2)=[CH:4][CH:3]=1.[C:26]1([CH2:32][CH2:33][SH:34])[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1.[OH-].[Na+]>O1CCOCC1.O>[CH2:33]([S:34][C:2]1[N:7]=[N:6][C:5]([N:8]2[CH2:13][CH2:12][N:11]([C:14]([C:16]3[CH:21]=[CH:20][CH:19]=[CH:18][C:17]=3[C:22]([F:25])([F:24])[F:23])=[O:15])[CH2:10][CH2:9]2)=[CH:4][CH:3]=1)[CH2:32][C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1

Participants

Conditions

Temperature: 105 °C

Procedure

A mixture of [4-(6-chloro pyridazin-3-yl)piperazin-1-yl]-(2-trifluoromethylphenyl)methanone (0.089 g, 0.240 mmol), 2-phenylethanethiol (0.049 g, 0.36 mmol) and sodium hydroxide (9.6 mg) in 5 mL 1,4-dioxane was heated at 100-110° C. overnight. The reaction mixture was cooled to room temperature, diluted with 20 mL of water, and then extracted with dichloromethane. The organic layer was washed with water, dried over anhydrous sodium sulphate, then concentrated in vacuo. The residue was purified by column chromatography to yield the title compound as a white solid (50 mg, 43.7% yield). 1H NMR (400 MHz, CDCl3) δ 7.65, 7.52-7.55, 7.47-7.48, 7.27, 7.12-7.22, 7.03, 6.76, 3.89-3.94, 3.79-3.84, 3.54-3.61, 3.49-3.51, 3.45, 3.17-3.25, 2.97.

Workup

temperatureThe reaction mixture was cooled to room temperature
extractionextracted with dichloromethane
washThe organic layer was washed with water
dry with materialdried over anhydrous sodium sulphate
concentrationconcentrated in vacuo
customThe residue was purified by column chromatography

Sources & evidence

ORD record: ord-13d83b58646d4c38b818a876f4634c89
Source dataset: uspto-grants-2012_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08148378B2

Reaction notes

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