Diethyl Sulfate → HCID 15457414, compound

Participants

Reaction Steps

A flask equipped with a magnetic stirbar was charged with 6.26 g of 2-vinyldicyanoimidazole. To this, 75 ml of distilled THF and 6.1 ml of triethylamine were added with stirring. After 5 minutes stirring, 5.7 ml of diethyl sulphate was added. This mixture was allowed to stir for 2 days. Analysis by TLC (50/50 hexane/ethyl acetate, UV visualization) showed the reaction was complete (starting material rf 0.3, product rf 0.6). The THF solution was rotovapped and the residue was dissolved in ethyl acetate. The ethyl acetate was washed with 10% aqueous sodium hydroxide. The combined aqueous layers were back extracted with methylene chloride. The combined organic layers were dried with magnesium sulphate and rotovapped to dryness. The crude residue was triturated with ether. The ether extracts were rotovapped and the residue recrystallized with ether/hexanes to yield 3.124 g of the product, mp 66-70° C. as yellow needles. A second crop yielded 1.72 g for a combined yield of 65%.

Provenance & Evidence