Trifluoroacetic acid → 3-((2-((7-Chloro-6-fluoro-2-quinolinyl)methoxy)-6,11-dihydrodibenz(b,E)oxepin-11-yl)thio)propanoic acid, (+)-

関与物質

反応手順

While stirring under ice cooling, 1 g of 2-(7-chloro-6-fluoroquinolin-2-yl)methoxy-11-hydroxy-6,11-dihydrodibenz[b,e]oxepine was added to a mixed solution of 8 ml of trifluoroacetic acid and 6 ml of methylene chloride, then 0.25 g of 3-mercaptopropionic acid was added to the solution and the mixture was stirred under ice cooling for 2 hours. After completion of the reaction, 180 ml of ice water was added the mixture, the mixture was adjusted to about pH 3 with a 1N-sodium hydroxide aqueous solution and then the aqueous layer was extracted with 200 ml of methylene chloride. The organic layer was washed with water and dried over anhydrous sodium sulfate and the residue obtained by removing the solvent under reduced pressure was recrystallized from ethyl acetate to obtain 0.63 g of the title compound as white powder.

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