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3,3-Dimethyl-1,2-epoxybutane is a hydrocarbon organic compound that can be synthesised by the high-temperature reaction of isopropyl chloride with excess styrene in organic solvents and purified by distillation and recrystallisation.3,3-Dimethyl-1,2-epoxybutane reacts with alkyl halides to form a homologous series of epoxides. It also reacts stereoselectively with aldehydes and ketones.

3,3-Dimethyl-1,2-epoxybutane is a colourless liquid compound with a molecular weight of 100.16, a boiling point of 95°C ~ 96°C, and is stored at -20°C under the following conditions.

3,3-Dimethyl-1,2-epoxybutane is used as pharm and intermediates.