Water → HCID 56847342, compound

Participants

Reaction Conditions

Reaction Steps

3-Fluoro-4-(8-hydroxy-7-methoxy-3-methyl-2-oxo-2,3-dihydroimidazo[4,5-c]quinolin-1-yl)benzonitrile (80 mg, 220 μmol) was dissolved in N,N-dimethylformamide (4.0 ml) under a dry argon atmosphere. Potassium carbonate (85 mg, 618 μmol) and 3-chloromethylthiophene (112 mg, 845 μmol; prepared from 3-thiophenemethanol using SOCl2 in CH2Cl2) were subsequently added. The reaction mixture was stirred at 50° C. for 18 h overnight. When the reaction was complete, the mixture was poured into water (60 ml), stirred for 30 min and extracted twice with ethyl acetate (75 ml each time). The combined organic phases were washed with water (25 ml), subsequently dried over Na2SO4, filtered with suction and evaporated in vacuo. The residue chromatographed over flash silica gel (solvent gradient ethyl acetate/0-17% by vol. of ethanol), giving 3-fluoro-4-(7-methoxy-3-methyl-2-oxo-8-(thiophen-3-ylmethoxy)-2,3-dihydroimidazo[4,5-c]quinolin-1-yl)benzonitrile (64 mg, 139 μmol), as solid. MS: 461.1 (M+H+), TLC (HPTLC): Rf=0.33 (ethyl acetate/ethanol 5:1, parts by volume).

Provenance & Evidence