1-((tert-Butoxycarbonyl)amino)cyclopropanecarboxylic acid → 2,5-Dimethylcyclopentyl N-t-butoxycarbonyl-1-aminocyclopropanecarboxylate

참여 물질

반응 단계

To a solution of 2,5-dimethylcyclopentanol (0.55 g.), compound 1 (0.97 g), and 4-(dimethylamino)pyridine (0.06 g.) in methylene chloride (100 ml) was added dicyclohexylacarbodiimide (1.09 g.), and the resulting mixture was stirred overnight. The precipitated dicyclohexylurea was removed by filtration, and the filtrate was evaporated. Ethyl acetate was then added to the residue, and the mixture was filtered again. The filtrate was washed with 1M hydrochloric acid, saturated aqeuous sodium bicarbonate, and water, dried over magnesium sulfate, and the solvent was evaporated to a colorless oil (1.18 g. 83%). The product was purified by column chromotography on silica gel, 4:1 hexane:ethyl acetate, eluent.

출처 및 근거