Water → HCID 58474318, compound

HRID 1400914Notes

Reaction equation

[NH2:1][C:2]1[CH:7]=[CH:6][C:5]([OH:8])=[C:4]([F:9])[C:3]=1[F:10].CC(C)([O-])C.[K+].[O:17]1[CH2:21][CH2:20][O:19][CH:18]1[C:22]1[CH:23]=[CH:24][C:25]([C:28]2[S:36][C:35]3[C:30](=[N:31][CH:32]=[CH:33][C:34]=3Cl)[CH:29]=2)=[N:26][CH:27]=1.O>CS(C)=O>[O:17]1[CH2:21][CH2:20][O:19][CH:18]1[C:22]1[CH:23]=[CH:24][C:25]([C:28]2[S:36][C:35]3[C:30](=[N:31][CH:32]=[CH:33][C:34]=3[O:8][C:5]3[CH:6]=[CH:7][C:2]([NH2:1])=[C:3]([F:10])[C:4]=3[F:9])[CH:29]=2)=[N:26][CH:27]=1

Participants

Conditions

Temperature: 100 °C

Procedure

To a solution of 4-amino-2,3-difluorophenol (1.59 g, 7.49 mmol) in DMSO (10 mL) was added potassium tert-butoxide (1.1 g, 8.98 mmol), and the reaction mixture was stirred for 2 hours. Chloride 301 (1.6 g, 4.99 mmol) was added and the reaction mixture was heated at 100° C. for 2 hours. The mixture was cooled down then poured into water (150 mL) at 40-45° C. and stirred for 30 min. The precipitate was collected by filtration, washed with water and dried overnight. The crude product was triturated with EtOAc/Hexane (2/1, 100 mL) for 1 h, to afford title compound 302 (1.7 g, 79% yield) as a pale violet solid. 1H NMR (300 MHz, DMSO-d6) δ (ppm): 8.70 (d, J=2.1 Hz, 1H), 8.53 (d, J=5.4 Hz, 1H), 8.39 (s, 1H), 8.31 (d, J=8.1 Hz, 1H), 7.98 (dd, J=8.1, 2.1 Hz, 1H), 7.10-7.00 (m, 1H), 6.71 (d, J=5.1 Hz, 1H), 6.72-6.61 (m, 1H), 5.90 (s, 1H), 5.64 (s, 2H), 4.16-3.96 (m, 4H).

Workup

temperatureThe mixture was cooled down
stirringstirred for 30 min
filtrationThe precipitate was collected by filtration
washwashed with water
customdried overnight
customThe crude product was triturated with EtOAc/Hexane (2/1, 100 mL) for 1 h

Sources & evidence

ORD record: ord-481b5a6b0cde44368014e67933491a5c
Source dataset: uspto-grants-2014_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08906852B2

Reaction notes

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