反应详情

A mixture of 0.028 g (0.64 mmol) of 4-(N′-{4-[2-(4-hydroxyphenyl)-vinyl]-2-oxo-1,2-dihydro-indol-3-ylidene}hydrazino)-benzenesulfonamide (Z isomer) and 0.015 g of 10% palladium on charcoal in 60 mL of MeOH:THF (4:1) was subjected to hydrogenation on a Parr apparatus at 50 psi for 1 h. The mixture was filtered through celite, and the filtrate was concentrated to give 0.026 g (93%) of the title compound as a yellow solid: 1H NMR (DMSO-d6): δ 2.82 (t, J=8.0 Hz, 2H), 3.23 (t, J=8.0 Hz, 2H), 6.69 (d, J=8.4 Hz, 2H), 6.78 (d, J=7.7 Hz, 1H), 6.89 (d, J=7.7 Hz, 1H), ), 7.07 (d, J=8.4 Hz, 2H), 7.18 (t, J=7.7 Hz, 1H), 7.26 (s, 2H), 7.45 (d, J=8.8 Hz, 2H), 7.71 (d, J=8.8 Hz, 2H), 9.20 (bs, 1H), 11.12 (s, 1H), 13.02 (s, 1H); APCI−MS m/z 435 (M−1)−.

1. filtrationThe mixture was filtered through celite
2. concentrationthe filtrate was concentrated