Water → HCID 22284396, compound

Participants

Reaction Steps

A solution of lithium diisopropylamide (10.4 mmol) in tetrahydrofuran (5 ml) is cooled to −78° C. under a nitrogen atmosphere, and a solution of 3,4-dihydro-2H-1,4-thiazin-3-one (500 mg, Reference compound No. 39-1) in tetrahydrofuran (5 ml) is added dropwise thereto. Then, 2-bromopropane (640 mg) is added dropwise thereto, and the mixture is stirred for three hours. The temperature is raised to room temperature, and the mixture is stirred for two days. Water is added to the reaction mixture under ice cooling, and the whole is extracted with ethyl acetate. The extract is washed with water and saturated brine successively and dried over anhydrous magnesium sulfate. The extract is concentrated under reduced pressure, and the resulting residue is purified by silica gel column chromatography to give the titled reference compound (100 mg).

Provenance & Evidence