1H-Imidazole-4-carbaldehyde → HCID 178519818, compound

HRID 624787Notes

Reaction equation

[CH:1]1([NH:4][C:5]2[N:10]3[N:11]=[CH:12][C:13](/[CH:14]=[C:15]4/[C:16](=[O:21])[NH:17][C:18](=[O:20])[NH:19]/4)=[C:9]3[N:8]=[C:7](S(C)=O)[N:6]=2)[CH2:3][CH2:2]1.C1(NC2N3N=CC(/C=C4/C(=O)NC(=O)N/4)=C3N=C(S(C)(=O)=O)N=2)CC1.[NH:50]1[CH:54]=[C:53]([CH:55]=[O:56])[N:52]=[CH:51]1>C(O)(C)C>[CH:1]1([NH:4][C:5]2[N:10]3[N:11]=[CH:12][C:13](/[CH:14]=[C:15]4\[NH:19][C:18](=[O:20])[NH:17][C:16]\4=[O:21])=[C:9]3[N:8]=[C:7]([N:50]3[CH:54]=[C:53]([CH:55]=[O:56])[N:52]=[CH:51]3)[N:6]=2)[CH2:3][CH2:2]1

Participants

Conditions

Temperature: 150 °C

Procedure

A mixture of (Z)-5-((4-(cyclopropylamino)-2-(methylsulfinyl)pyrazolo[1,5-a][1,3,5]triazin-8-yl)methylene)imidazolidine-2,4-dione and (Z)-5-((4-(cyclopropylamino)-2-(methylsulfonyl)pyrazolo[1,5-a][1,3,5]triazin-8-yl)methylene)imidazolidine-2,4-dione (20 mg, 0.056 mmol) was mixed with 1H-imidazole-4-carbaldehyde (16 mg, 0.168 mmol) in isopropanol (2 mL). The mixture was stirred under microwave heating at 150° C. for 20 minutes. The reaction mixture was cooled to room temperature and the solvent was removed by rotary evaporation to provide (Z)-1-(4-(cyclopropylamino)-8-((2,5-dioxoimidazolidin-4-ylidene)methyl)pyrazolo[1,5-a][1,3,5]triazin-2-yl)-1H-imidazole-4-carbaldehyde as a crude mixture which was taken on to the next step without further purification. LCMS (ES): >95% pure, m/z 380 [M+H]+

Workup

temperatureThe reaction mixture was cooled to room temperature
customthe solvent was removed by rotary evaporation

Sources & evidence

ORD record: ord-31241b66637549039a690b0cae52ac6a
Source dataset: uspto-grants-2016_04
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09303033B2

Reaction notes

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