反应详情

(S)-3-(2-Benzyloxy-benzenesulfonylamino)-N-methoxy-N-methyl-succinamic acid tert-butyl ester (3.54 g) in TBF(50 mL) was treated with 20% Pd/C (0.30 g) at 50 psi hydrogen until uptake was complete. The reaction was filtered and the filtrate was evaporated to give (S)-3-(2-hydroxy-benzenesulfonylamino)-N-methoxy-N-methyl-succinamic acid tert-butyl ester as a colorless oil (3.01 g, 100%). 1H NMR (CDCl3) 8.82(s,1H), 7.63(d,1H), 7.44(t,1H), 6.98(m,2H), 5.95(d,1H), 4.62(bs,1H), 3.62(s,3H), 3.03(s,3H), 2.65-2.40(AB quartet, 2H), 1.43(s,9H).

1. filtrationThe reaction was filtered
2. customthe filtrate was evaporated