N,N,N',N'-Tetramethylethylenediamine → HCID 13394257, compound

Participants

Reaction Steps

A mixture of 4,5-bis(4-methoxyphenyl)-1-methyl-1H-imidazole (10.0 g, 0.034 mol) and N, N, N',N'-tetramethylethylenediamine (three equivalents) in 75 ml of dry tetrahydrofuran was cooled to -78° and treated with n-butyllithium (1.1 equivalents). The mixture was stirred at -78° under nitrogen for one hour and treated with dimethylsulfamoyl chloride (5.5 g, 0.038 mol). The mixture was stirred at -78° for 30 minutes and then overnight at room temperature. The reaction mixture was concentrated in vacuo, and the residue triturated with 10% citric acid. The resulting solid was collected by filtration, washed with water, and dried in vacuo to yield 10.3 g (92%) of the title compound, homogenous by tlc (toluene-ethyl acetate, 6:4; Rf=0.56), m.p. 132°-133°.

Provenance & Evidence