反应详情

610 mg (1.63 mmol) of 4-(1,3-dioxo-1,3-dihydroisoindol-2-yl)-2-pentafluorosulfanylbenzonitrile 51.8 were dissolved in 30 ml of ethanol and admixed with 100 mg (1.956 mmol) of hydrazine hydrate (100%). The mixture was stirred at room temperature overnight. Thereafter, the mixture was concentrated under reduced pressure and the residue was purified by chromatography (preparative HPLC; Purospher STAR RP-18e (10 μm); eluent: acetonitrile/water (0.5% trifluoroacetic acid) 5/95→95/5 [45 min.]). 4-Amino-2-pentafluorosulfanylbenzonitrile 51.9 (1H NMR: 7.65, s, 1H, 7.2, s, 1H, 6.8, m, 3H) and N-(4-cyano-3-pentafluorosulfanylphenyl)phthalamide ethyl ester 51.10 (1H NMR: 11.3, s, 1H, 8.6, s, 1H, 8.2, d, 1H, 8.1, d, 1H, 7.95, d, 1H, 7.75, m, 1H, 7.7, m, 2H, 4.2, q, 2H, 1.15, t, 3H) were obtained.

1. concentrationThereafter, the mixture was concentrated under reduced pressure
2. customthe residue was purified by chromatography (preparative HPLC; Purospher STAR RP-18e (10 μm); eluent: acetonitrile/water (0.5% trifluoroacetic acid) 5/95→95/5 [45 min.])