Dicyclohexylcarbodiimide → 2-(Boc-amino)-N-{1-[1-(4-chlorophenyl)cyclobutyl]-3-methylbutyl}-3-methylvaleramide

Participants

Reaction Steps

250 mg of 1-[1-(4-chlorophenyl)cyclobutyl]-3-methylbutylamine (II) and 210 mg of Boc-isoleucine (R in Formula is Boc) was dissolved in anhydrous THF (5 mL). 220 mg DCC was dissolved in 25 mL anhydrous THF. The solution of DCC in THF was added dropwisely into the reaction solution, and then stirred overnight at room temperature to give white precipitate. The solid was filtered off and washed for at least three times with anhydrous ethyl ether. The filtrate and washed ethyl ether were collected, evaporated and purified by column chromatography to give title compound 2-(Boc-amino)-N-{1-[1-(4-chlorophenyl)cyclobutyl]-3-methylbutyl}-3-methylvaleramide (Formula I, wherein R is Boc).

Provenance & Evidence