tert-Butanol → 4-Pentynoic acid, 1,1-dimethylethyl ester

Beteiligte Stoffe

Reaktionsschritte

Pent-4-ynoic acid (5.0 g, 51.0 mmol), 2-methylpropan-2-ol (7.56 g, 102.0 mmol) and 4-(dimethylamino)pyridine (0.31 g, 2.54 mmol) were dissolved in DCM (17.5 ml), a solution of dicyclohexylcarbodiimide (11.6 g, 56.2 mmol) in DCM (17.5 ml) was added and the mixture was stirred at room temperature overnight. The white solid in the reaction solution was removed by filtration, after which the filtrate was washed with a 0.5 M aqueous hydrochloric acid solution and a saturated aqueous sodium bicarbonate solution and dried over anhydrous magnesium sulfate. The residue obtained by filtration and concentration under reduced pressure was purified by silica gel column chromatography (DCM) to afford the title compound (Compound SP429) (7.15 g, 91.0%).

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