反应详情

0.4 g (0.4 mass equivalent) of 10% palladium-on-charcoal is added to a solution of 0.9 g (2.7 mmol) of methyl 2(S)-ethoxy-3-[4-(2-methyl-5-nitro-2H-[1,2,4]triazol-3-yl)phenyl]propanoate in 40 ml of ethanol and 10 ml of methanol, degassed beforehand, and the reaction medium is placed under an atmospheric pressure of hydrogen for 3 hours. After filtration through Celite and washing with ethyl acetate, the filtrate is evaporated under vacuum. 0.82 g (100%) of methyl 3-[4-(5-amino-2-methyl-2H-[1,2,4]triazol-3-yl)phenyl]-2(S)-ethoxypropanoate is obtained.

1. customdegassed beforehand
2. filtrationAfter filtration through Celite
3. washwashing with ethyl acetate
4. customthe filtrate is evaporated under vacuum