1,2-Dichloroethane → 7-bromo-1-((1S)-2-{[tert-butyl(dimethyl)silyl]oxy}-1-methylethyl)-2-(chloromethyl)-1H-imidazo[4,5-c]quinoline

HRID 1035577Notes

Reaction equation

[Br:1][C:2]1[CH:11]=[C:10]2[C:5]([C:6]([NH:13][C@@H:14]([CH3:24])[CH2:15][O:16][Si:17]([C:20]([CH3:23])([CH3:22])[CH3:21])([CH3:19])[CH3:18])=[C:7]([NH2:12])[CH:8]=[N:9]2)=[CH:4][CH:3]=1.[Cl:25][CH2:26][CH2:27]Cl.Cl.ClCC(=N)OCC.C([O-])(O)=O.[Na+]>C(Cl)(Cl)Cl>[Br:1][C:2]1[CH:3]=[CH:4][C:5]2[C:6]3[N:13]([C@@H:14]([CH3:24])[CH2:15][O:16][Si:17]([C:20]([CH3:23])([CH3:22])[CH3:21])([CH3:18])[CH3:19])[C:27]([CH2:26][Cl:25])=[N:12][C:7]=3[CH:8]=[N:9][C:10]=2[CH:11]=1

Participants

Conditions

Temperature: 70 °C

Procedure

A 1-L, three-necked, Morton flask, equipped with overhead stirrer, was charged with 7-bromo-N4-((1S)-2-{[tert-butyl(dimethyl)silyl]oxy}-1-methylethyl)quinoline-3,4-diamine (33.4 g, 81.0 mmol) and 1,2-dichloroethane (400 mL) and the mixture was stirred under N2. Ethyl 2-chloroethanimidoate hydrochloride (29.1 g, 184.0 mmol) was then added in portions and the reaction mixture was heated to 70° C. for 3 days. The reaction mixture was then cooled to ambient temperature and treated with CHCl3 (500 mL) and saturated aqueous NaHCO3 solution (700 mL). The layers were separated and the organic portion was concentrated under reduced pressure to give 38 g of 7-bromo-1-((1S)-2-{[tert-butyl(dimethyl)silyl]oxy}-1-methylethyl)-2-(chloromethyl)-1H-imidazo[4,5-c]quinoline as a golden solid.

Workup

temperatureThe reaction mixture was then cooled to ambient temperature
customThe layers were separated
concentrationthe organic portion was concentrated under reduced pressure

Sources & evidence

ORD record: ord-2ae19f82e34443a9a75fecaf34bd31a5
Source dataset: uspto-grants-2013_10
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US08546383B2

Reaction notes

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