Hydrochloric Acid → HCID 12098836, compound

Participants

Reaction Steps

Dehydrated tetrahydrofuran (15 ml) was cooled to −78° C. 1.53 M solution (6.5 ml) of n-butyllithium in hexane and then a solution of methylene chloride (0.8 ml) in dehydrated tetrahydrofuran (5 ml) were added thereto, and they were stirred for 10 minutes. A solution of benzyl ester (2.18 g) of N,N-dibenzyl-L-phenylalanine in dehydrated tetrahydrofuran (7 ml) was added to the obtained mixture, and they were stirred for 1 hour. 2 N hydrochloric acid (15 ml) and water (15 ml) were added to the reaction mixture to terminate the reaction. The temperature was elevated to room temperature. After the addition of water followed by the extraction with ethyl acetate, the obtained solutions in ethyl acetate were combined together and dried over anhydrous magnesium sulfate. Magnesium sulfate was filtered out. The solvent was evaporated under reduced pressure to obtain the intended (3S)-1,1-dichloro-3-dibenzylamino-4-phenyl-2-butanone (2.04 g) in a yield of 99%.

Provenance & Evidence