Potassium Hydroxide → 1-ethyl-6-methoxy-2-[4-(2-oxo-imidazolidin-1-yl)-phenyl]-1H-indole-3-carbonitrile

HRID 252581Notes

Reaction equation

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

Participants

Conditions

Temperature: 49 °C

Procedure

To a solution of 1-(2-chloroethyl)-3-[4-(3-cyano-1-ethyl-6-methoxy-1H-indol-2-yl)-phenyl]-urea (100 mg, 0.252 mmol) in MeOH (10 mL) is added aqueous 1M KOH (504 uL) and then stirred at 49° C. for 24 h. The solvents are removed under reduced pressure. The residue is diluted with ethyl acetate and then washed with water. The organic layer is dried over anhydrous MgSO4, filtered and concentrated under reduced pressure. The residue is diluted with ethyl acetate and then triturated with hexane and the precipitate collected by filtration and washed well with 50% ethyl acetate in hexane and dried in vacuo to afford 1-ethyl-6-methoxy-2-[4-(2-oxo-imidazolidin-1-yl)-phenyl]-1H-indole-3-carbonitrile (56 mg, 62%).

Workup

customThe solvents are removed under reduced pressure
additionThe residue is diluted with ethyl acetate
washwashed with water
dry with materialThe organic layer is dried over anhydrous MgSO4
filtrationfiltered
concentrationconcentrated under reduced pressure
additionThe residue is diluted with ethyl acetate
customtriturated with hexane
filtrationthe precipitate collected by filtration
washwashed well with 50% ethyl acetate in hexane
customdried in vacuo

Sources & evidence

ORD record: ord-f9fc88ee0f4f4441ab260670d787de3a
Source dataset: uspto-grants-2011_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07868037B2

Reaction notes

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