1-Bromo-3-chloropropane → HCID 58737337, compound

Participants

Reaction Conditions

Reaction Steps

60% Oily sodium hydride (832 mg) was added to a solution of ethyl (±)-1,3-dimethyl-2,5-dioxo-2,3,5,6,7,8-hexahydro-1H-naphtho[2,3-d]imidazole-6-carboxylate (5.0 g) obtained in Reference Example 138 in dimethylformamide,and the mixture was stirred at 60° C. for 1 hour. 1-Bromo-3-chloropropane was added thereto, and the mixture was stirred at 60° C. for 4 hours. The reaction mixture was allowed to cool, and water was added to decompose excessive sodium hydride. Then, the mixture was extracted with ethyl acetate, and washed with brine. The organic layer was dried over anhydrous magnesium sulfate, the solvent was evaporated under reduced pressure, and the residue was purified by silica gel column chromatography to give the title compound as a pale yellow oil.

Provenance & Evidence