Ethylenediamine → 4-(tert-Butyldiphenylsilyloxymethyl)-1-(2-propenyl)-1H-imidazole

Participants

Reaction Steps

4-(tert-Butyldiphenylsilyloxymethyl)-1H-imidazole (1.000 g), 2-bromo-1-propene (1.04 mL), ethylenediamine (0.40 mL), copper iodide (0.28 g) and tripotassium phosphate (1.30 g) were suspended in dioxane (10 mL), and reacted in a microwave reactor (product name: Initiator, manufactured by Biotage, Ltd.) at 140° C. for 5 hours. The reaction solution was filtered using Celite to filter off the insolubles, followed by concentration of the mother liquor. The resulting residue was purified by flash chromatography (ethyl acetate/hexane=10%→100%) using silica gel column (product name: Hi-Flash column 3 L, manufactured by Yamazen Corporation) to afford the title compound (0.350 g).

Provenance & Evidence