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

HRID 1399003Notes

Reaction equation

[Cl:1][C:2]1[C:10]2[N:9]=[C:8]3[N:11]([C:16]4[C:17]([CH3:24])=[CH:18][C:19]([C:22]#[N:23])=[N:20][CH:21]=4)[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-].[K+].C([OH:36])(C)(C)C>O>[Cl:1][C:2]1[C:10]2[N:9]=[C:8]3[N:11]([C:16]4[C:17]([CH3:24])=[CH:18][C:19]([C:22]([NH2:23])=[O:36])=[N:20][CH:21]=4)[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: 80 °C

Procedure

A mixture of 5-[10-chloro-7-(1-ethylpropyl)-2,3,4,5-tetrahydro-1H-[1,3]diazepino[1,2-a]benzimidazol-1-yl]-4-methylpyridine-2-carbonitrile (Example 59; 70.0 mg, 0.172 mmol), potassium hydroxide (38.5 mg, 0.687 mmol) and t-butyl alcohol (2 mL) was stirred at 80° C. for 15 min. After the reaction mixture was diluted with water at 0° C., the precipitate was collected by filtration and washed with water and diisopropyl ether to give the title compound as a solid (64.8 mg, 0.152 mmol, 88%). Analytically pure material was obtained by recrystallization from ethyl acetate/n-hexane.

Workup

filtrationthe precipitate was collected by filtration
washwashed with water and diisopropyl ether

Sources & evidence

ORD record: ord-756f0ba24af7499aa2675c63ac6aae76
Source dataset: uspto-grants-2014_12
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08901141B2

Reaction notes

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