Water → 4-{[4-Chloro-3-(trifluoromethyl)benzyl]amino}-6-nitroquinazoline-8-carboxamide

HRID 474408Notes

Reaction equation

[Cl:1][C:2]1[CH:25]=[CH:24][C:5]([CH2:6][NH:7][C:8]2[C:17]3[C:12](=[C:13]([C:21](O)=[O:22])[CH:14]=[C:15]([N+:18]([O-:20])=[O:19])[CH:16]=3)[N:11]=[CH:10][N:9]=2)=[CH:4][C:3]=1[C:26]([F:29])([F:28])[F:27].C1N=C[N:32](C(N2C=NC=C2)=O)C=1.[NH4+].[Cl-].O>CS(C)=O>[Cl:1][C:2]1[CH:25]=[CH:24][C:5]([CH2:6][NH:7][C:8]2[C:17]3[C:12](=[C:13]([C:21]([NH2:32])=[O:22])[CH:14]=[C:15]([N+:18]([O-:20])=[O:19])[CH:16]=3)[N:11]=[CH:10][N:9]=2)=[CH:4][C:3]=1[C:26]([F:27])([F:28])[F:29]

Participants

Conditions

Temperature: 50 °C

Procedure

To a solution of 4-{[4-chloro-3-(trifluoromethyl)benzyl]amino}-6-nitroquinazoline-8-carboxylic acid (40 mg, 0.09 mmol) in 1 mL of anhydrous DMSO, CDI (22 mg, 0.14 mmol, 1.5 equiv.) was added. The resulting mixture was stirred at 50° C. for 3 h. After cooling down to rt, NH4Cl (11 mg, 0.14 mmol, 1.5 equiv.) was added. The reaction mixture was stirred at it overnight. The reaction mixture was poured into water. The yellow precipitate was collected as the desired product by filtration, followed by washed with water in 96% yield. 1HNMR (in DMSO): 4.90 (d, J=5.5 Hz, 2H), 7.66-7.72 (m, 2H), 7.93 (s, 1H), 8.19 (d, J=3.3 Hz, 1H), 8.72 (s, 1H), 9.17 (d, J=2.6 Hz, 1H), 9.53 (d, J=2.6 Hz, 1H), 9.87 (t, J=5.8 Hz, 1H), 10.22 (d, J=3.3 Hz, 1H). Mass: M+H+: 426.

Workup

temperatureAfter cooling down to rt
stirringThe reaction mixture was stirred at it overnight
filtrationThe yellow precipitate was collected as the desired product by filtration
washby washed with water in 96% yield

Sources & evidence

ORD record: ord-10154421c9964e9d831404b46f15f8c7
Source dataset: uspto-grants-2014_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08637532B2

Reaction notes

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