3-Chloro-4-fluoroaniline → N-(3-chloro-4-fluorophenyl)-2-(4-fluorophenyl)-oxazolo[5,4-d]pyrimidin-7-amine

HRID 718267Notes

Reaction equation

Cl[C:2]1[C:3]2[N:10]=[C:9]([C:11]3[CH:16]=[CH:15][C:14]([F:17])=[CH:13][CH:12]=3)[O:8][C:4]=2[N:5]=[CH:6][N:7]=1.[Cl:18][C:19]1[CH:20]=[C:21]([CH:23]=[CH:24][C:25]=1[F:26])[NH2:22]>ClCCCl.CC(O)(C)C>[Cl:18][C:19]1[CH:20]=[C:21]([NH:22][C:2]2[C:3]3[N:10]=[C:9]([C:11]4[CH:16]=[CH:15][C:14]([F:17])=[CH:13][CH:12]=4)[O:8][C:4]=3[N:5]=[CH:6][N:7]=2)[CH:23]=[CH:24][C:25]=1[F:26]

Participants

Conditions

Temperature: 90 °C

Procedure

To a solution of 7-chloro-2-(4-fluorophenyl)-oxazolo[5,4-d]pyrimidine (85 mg, 0.34 mmol) in 1,2-dichloroethane/t-BuOH (1:1, 2 ml) was added 3-chloro-4-fluoroaniline (50 mg, 0.34 mmol). The mixture was heated at 90° C. for 1 day. After cooling down to room temperature, the solvent was removed under reduced pressure. The crude residue was purified by silica gel chromatography (CH2Cl2/MeOH 50:1) to yield the title compound as a white solid (0.1 g, 82%).

Workup

temperatureAfter cooling down to room temperature
customthe solvent was removed under reduced pressure
customThe crude residue was purified by silica gel chromatography (CH2Cl2/MeOH 50:1)

Sources & evidence

ORD record: ord-420e496044ce421294271dbfebec940c
Source dataset: uspto-grants-2015_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09193741B2

Reaction notes

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