Dimethylamine → HCID 15491028, compound

Participants

Reaction Conditions

Reaction Steps

Dimethylamine (3 ml, 0.045 mol, Kodak) was added to a chilled (ice bath) solution of (E)-2-(7-fluoro-1,2,3,4-tetrahydro-1-naphthylidene)acetyl chloride (2.3 g, 0.010 mol) in dichloromethane (35 ml). The reaction was warmed to 25° C. and stirred for 1.5 h. The volatiles were removed by spin evaporation in vacuo to give a beige residue. This residue was dissolved in ethyl acetate (200 ml), washed with deionized water (50 ml), and the organic layer was concentrated by spin evaporation in vacuo. The residue was chromatographed on Silica Gel 60 using a step gradient from ethyl acetate-hexanes/1:5 to ethyl acetate. Fractions containing (e)-2-(7-fluoro-1,2,3,4-tetrahydro-1-naphthylidene)-N,N-dimethylacetamide were combined and concentrated by spin evaporation in vacuo to a white solid. Recrystallization from dichloromethane-hexanes gave 1.62 g (70%) of (E)-2-(7-fluoro-1,2,3,4-tetrahydro-1-naphthylidene)-N,N-dimethylacetamide as a white crystalline solid; m.p., 66-70° C.

Provenance & Evidence