Trifluoroacetic acid → 1-(2-Methyl-4-phenyl-5,6,7,8-tetrahydro-9-thia-1,7-diaza-fluoren-3-yl)-ethanone

関与物質

反応手順

To a stirred solution of 70 mg (0.16 mmol) 3-acetyl-2-methyl-4-phenyl-5,8-dihydro-6H-9-thia-1,7-diaza-fluorene-7-carboxylic acid tert-butyl ester in 3 ml dicloromethane was added 0.2 ml trifluoroacetic acid. The mixture was stirred over night at RT, and then poured onto an aqueous solution of NaHCO3, and extracted three times with ethyl acetate. The combined organic phases were dried over sodium sulfate and concentrated in vacuo to afford 48 mg (94%) 1-(2-methyl-4-phenyl-5,6,7,8-tetrahydro-9-thia-1,7-diaza-fluoren-3-yl)-ethanone as a yellow solid. ES-MS m/e (%): 323 (M+H+, 100).

情報源と証拠