Dimethylformamide dimethyl acetal → HCID 54139288, compound

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Reaction Steps

This product (5.21 g), dimethylformamide dimethyl acetal (4.8 g) and pyridinium tosylate were heated together in a flask equipped with a Vigreaux column topped by a distillation head. The mixture was heated by an oil bath at 95° for 6 hours, causing the methanol produced by reaction to slowly distil off. The reaction mixture was then cooled, diluted with an aqueous solution of sodium hydrogen carbonate and extracted into ethyl acetate. The extract was washed with water, dried over magnesium sulphate and evaporated to give an oil which was purified by column chromatography (stationary phase: silica, eluent: 4:1 hexane:ethyl acetate) to give methyl 3-dimethylamino-2-[α-(4,4-dimethyl-5-methylene-2-thiazolin-2-ylthio)-o-tolyl]prop-2-enoate. (Compound 13A)

Provenance & Evidence