Aniline → 2-Acetamido-4-anilino-6-(4-fluoro-phenyl)-pyrido[3,2-d]pyrimidine

HRID 1517422Notes

Reaction equation

[C:1]([NH:4][C:5]1[N:6]=[C:7](C2N=CNN=2)[C:8]2[N:14]=[C:13]([C:15]3[CH:20]=[CH:19][C:18]([F:21])=[CH:17][CH:16]=3)[CH:12]=[CH:11][C:9]=2[N:10]=1)(=[O:3])[CH3:2].[NH2:27][C:28]1[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=1>O1CCOCC1>[C:1]([NH:4][C:5]1[N:6]=[C:7]([NH:27][C:28]2[CH:33]=[CH:32][CH:31]=[CH:30][CH:29]=2)[C:8]2[N:14]=[C:13]([C:15]3[CH:20]=[CH:19][C:18]([F:21])=[CH:17][CH:16]=3)[CH:12]=[CH:11][C:9]=2[N:10]=1)(=[O:3])[CH3:2]

Participants

Conditions

Temperature: 60 °C

Procedure

To a suspension of 2-acetamido-4-(1,2,4-triazolyl)-6-(4-fluorophenyl)-pyrido[3,2-d]pyrimidine (367 mg, 1 mmol) in dioxane (20 ml) was added aniline (186 mg, 2 mmol). The solution was stirred overnight at 60° C. The solvents were evaporated in vacuo yielding crude 2-acetamido-4-anilino-6-(4-fluoro-phenyl)-pyrido[3,2-d]pyrimidine. The residue was redissolved in a mixture of dichloromethane and ethanol (in a ratio of 80/20, 10 ml). A sodium ethoxide solution (0.2 N solution) was added till pH 12 and the resulting mixture was stirred overnight at room temperature. The solvents were evaporated in vacuo. The crude residue was purified by preparative TLC on silica, using a methanol/dichloromethane mixture in a ratio of 10:90 as mobile phase, yielding the pure title compound (160 mg, 50%) which was characterised as follows:

Workup

customThe solvents were evaporated in vacuo

Sources & evidence

ORD record: ord-6e705e04631f46a6a94a280f1468ca18
Source dataset: uspto-grants-2012_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08232278B2

Reaction notes

Loading…