Water → 6-[10-Chloro-7-(1-ethylpropyl)-2,3,4,5-tetrahydro-1H-[1,3]diazepino[1,2-a]benzimidazol-1-yl]-5-methylpyridine-3-carboxamide

HRID 1628874Notes

Reaction equation

[Cl:1][C:2]1[C:10]2[N:9]=[C:8]3[N:11]([C:16]4[N:21]=[CH:20][C:19]([C:22]#[N:23])=[CH:18][C:17]=4[CH3:24])[CH2:12][CH2:13][CH2:14][CH2:15][N:7]3[C:6]=2[C:5]([CH:25]([CH2:28][CH3:29])[CH2:26][CH3:27])=[CH:4][CH:3]=1.[OH-:30].[K+].O>C(O)(C)(C)C>[Cl:1][C:2]1[C:10]2[N:9]=[C:8]3[N:11]([C:16]4[N:21]=[CH:20][C:19]([C:22]([NH2:23])=[O:30])=[CH:18][C:17]=4[CH3:24])[CH2:12][CH2:13][CH2:14][CH2:15][N:7]3[C:6]=2[C:5]([CH:25]([CH2:28][CH3:29])[CH2:26][CH3:27])=[CH:4][CH:3]=1

Participants

Conditions

Temperature: 800 °C

Procedure

A mixture of 6-[10-chloro-7-(1-ethylpropyl)-2,3,4,5-tetrahydro-1H-[1,3]diazepino[1,2-a]benzimidazol-1-yl]-5-methylpyridine-3-carbonitrile (100 mg, 0.245 mmol) and potassium hydroxide (41 mg, 0.735 mmol) in tert-butanol (2 mL) was stirred at 800° C. for 2 hr. After cooling, water was added and the mixture was extracted with ethyl acetate. Organic layer was washed with brine, dried over anhydrous sodium sulfate and concentrated in vacuo. The residue was recrystallized from ethyl acetate/isopropyl ether to afford the title compound (70 mg, 67%) as a colorless solid.

Workup

temperatureAfter cooling
extractionthe mixture was extracted with ethyl acetate
washOrganic layer was washed with brine
dry with materialdried over anhydrous sodium sulfate
concentrationconcentrated in vacuo
customThe residue was recrystallized from ethyl acetate/isopropyl ether

Sources & evidence

ORD record: ord-ee9c43ebf98841bba8f5d37bfc7246c1
Source dataset: uspto-grants-2014_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08785460B2

Reaction notes

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