Lithium Hydroxide → (2S)-2-[(1,2,3,3a,4,8b-Hexahydrocyclopenta[b]Indol-5-ylcarbonyl)Amino]-Propanoic Acid

Participants

Reaction Steps

A 1 M aqueous lithium hydroxide solution (13 mmol, 13 mL) was added to a solution of ethyl (2S)-2-[(1,2,3,3a,4,8b-hexahydrocyclopenta[b]indol-5-ylcarbonyl)amino]propanoate (6.1 mmol, 1.9 g) in THF (50 mL). The reaction mixture was stirred at room temperature for 18 h. The reaction was concentrated in vacuo and diluted with 0.1 N HCI and ethyl acetate. The phases were separated and the organic phase was washed with water, dried over MgSO4, filtered, and concentrated to give a yellow oil (1.6 g, 6.1 mmol, quantitative).

Provenance & Evidence