反应详情

0.22g (0.52 mmol) (S)-N-((S)-5-cyclopropylmethyl-6-oxo-6,7-dihydro-5H-dibenzo[b,d]azepin-7-yl)-2-fluoro-2-methyl-malonamic acid ethyl ester in 3 ml tetrahydrofurane was reacted with a solution of 0.02 g (0.52 mmol) lithium hydroxide monohydrate in 1 ml water at room temperature for 2 hours. Evaporation of the tetrahydrofurane, extraction with diethylether, acidification with 0.5 ml 1 N aqueous hydrochloric acid and extraction with ethylacetate gave 0.18 g (S)-N-((S)-5-cyclopropylmethyl-6-oxo-6,7-dihydro-5H-dibenzo[b,d]azepin-7-yl)-2-fluoro-2-methyl-malonamic acid as white solid.

1. customEvaporation of the tetrahydrofurane, extraction with diethylether, acidification
2. extractionwith 0.5 ml 1 N aqueous hydrochloric acid and extraction with ethylacetate