Fluoroacetyl chloride → (S)-2-Fluoro-1-[2-(2-methoxy-ethyl)-4-(2-trifluoromethyl-4H-3-thia-1,4,9-triaza-benzo[f]azulen-10-yl)-piperazin-1-yl]-ethanone

HRID 131504

Reaction equation

[F:1][CH2:2][C:3](Cl)=[O:4].[CH3:6][O:7][CH2:8][CH2:9][C@@H:10]1[NH:15][CH2:14][CH2:13][N:12]([C:16]2[C:25]3[N:24]=[C:23]([C:26]([F:29])([F:28])[F:27])[S:22][C:21]=3[NH:20][C:19]3[CH:30]=[CH:31][CH:32]=[CH:33][C:18]=3[N:17]=2)[CH2:11]1.C(N(C(C)C)CC)(C)C>ClCCl>[F:1][CH2:2][C:3]([N:15]1[CH2:14][CH2:13][N:12]([C:16]2[C:25]3[N:24]=[C:23]([C:26]([F:28])([F:29])[F:27])[S:22][C:21]=3[NH:20][C:19]3[CH:30]=[CH:31][CH:32]=[CH:33][C:18]=3[N:17]=2)[CH2:11][C@@H:10]1[CH2:9][CH2:8][O:7][CH3:6])=[O:4]

Participants

Conditions

Temperature: 0 °C

Procedure

Add a solution of fluoroacetyl chloride (0.133 g, 1.38 mmol) in anhydrous dichloromethane (1-2 mL) dropwise to a 0° C. solution of (S)-10-[3-(2-Methoxy-ethyl)-piperazin-1-yl]-2-trifluoromethyl-4H-3-thia-1,4,9-triaza-benzo[f]azulene (0.283 g, 0.688 mmol) and diisopropylethylamine (0.240 mL, 1.38 mmol) in anhydrous dichloromethane, and stir at 0° C. for 3 hours. Concentrate the reaction under reduced pressure to afford an oil. Purify the oil by flash chromatography, eluting with a gradient of a solution of 2% 2M ammonia in methanol, in dichloromethane (0-100% in dichloromethane over 30 minutes, then 100% for 28 minutes) to give the title compound: 0.18 g (56%). Mass spectrum (APCI+, m/e): 472 (M+1).

Workup

concentrationConcentrate
customthe reaction under reduced pressure
customto afford an oil
customPurify the oil by flash chromatography
washeluting with a gradient of a solution of 2% 2M ammonia in methanol, in dichloromethane (0-100% in dichloromethane over 30 minutes

Sources & evidence

ORD record: ord-64d0f8c8fd9541be8b805a31be9a2ed6
Source dataset: uspto-grants-2008_06
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07384934B2

Linked notes

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