Piperidine → HCID 178510024, compound

HRID 2037015Notes

Reaction equation

[CH:1]1([NH:4][C:5]2[N:10]3[N:11]=[CH:12][C:13]([CH:14]=O)=[C:9]3[N:8]=[C:7]([NH:16][C:17]3[CH:24]=[CH:23][C:20]([C:21]#[N:22])=[CH:19][CH:18]=3)[CH:6]=2)[CH2:3][CH2:2]1.[NH:25]1[CH2:31][C:29](=[O:30])[NH:28][C:26]1=[O:27].N1CCCCC1>CCO>[CH:1]1([NH:4][C:5]2[N:10]3[N:11]=[CH:12][C:13](/[CH:14]=[C:31]4\[NH:25][C:26](=[O:27])[NH:28][C:29]\4=[O:30])=[C:9]3[N:8]=[C:7]([NH:16][C:17]3[CH:18]=[CH:19][C:20]([C:21]#[N:22])=[CH:23][CH:24]=3)[CH:6]=2)[CH2:2][CH2:3]1

Participants

Conditions

Temperature: 80 °C

Procedure

4-(7-(cyclopropylamino)-3-formylpyrazolo[1,5-a]pyrimidin-5-ylamino)benzonitrile (75 mg, 0.24 mmol) was suspended in EtOH (2.4 mL). Hydantoin (36 mg, 0.35 mmol) and piperidine (36 μL, 0.35 mmol) were added and the reaction was heated to 80° C. After 15 h, the solution was filtered while warm and the filter cake was washed with warm EtOH (3 mL) to give (Z)-4-(7-(cyclopropylamino)-3-((2,5-dioxoimidazolidin-4-ylidene)methyl)pyrazolo[1,5-a]pyrimidin-5-ylamino)benzonitrile (76 mg, 80%) as a bright yellow solid. LCMS (ES): >90% pure, m/z 401 [M+1]+.

Workup

filtrationthe solution was filtered
temperaturewhile warm
washthe filter cake was washed with warm EtOH (3 mL)

Sources & evidence

ORD record: ord-06a7043127834a9984063e11cba05fc6
Source dataset: uspto-grants-2013_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08575177B2

Reaction notes

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