Sodium hydride → 5-Fluoro-1-methyl-3-(4-methyl-4-nitro-pentyl)-1,3-dihydro-benzimidazol-2-one

참여 물질

반응 단계

First of all 0.624 g (13.9 mmol) 60% sodium hydride and then, with cooling, 4.6 g (17.8 mmol) 1-iodo-4-methyl-4-nitro-pentane in 10 mL DMF are added to a solution of 2.1 g (12.6 mmol) 5-fluoro-1-methyl-1,3-dihydro-benzimidazol-2-one in DMF. The reaction mixture is stirred overnight at ambient temperature, then poured onto water and extracted with diethyl ether. The organic phases are evaporated down and the residue is recrystallised from isopropylether. Yield: 1.8 g (48%); mass spectroscopy [M+H]+=296.

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