2-Pyrrolidinone, 5-ethoxy-1-((4-(phenylmethoxy)phenyl)sulfonyl)- → 2-Pyrrolidinone, 5-ethoxy-1-((4-hydroxyphenyl)sulfonyl)-
Reaction equation
C([O:8][C:9]1[CH:14]=[CH:13][C:12]([S:15]([N:18]2[CH:22]([O:23][CH2:24][CH3:25])[CH2:21][CH2:20][C:19]2=[O:26])(=[O:17])=[O:16])=[CH:11][CH:10]=1)C1C=CC=CC=1>C(O)C>[OH:8][C:9]1[CH:14]=[CH:13][C:12]([S:15]([N:18]2[CH:22]([O:23][CH2:24][CH3:25])[CH2:21][CH2:20][C:19]2=[O:26])(=[O:17])=[O:16])=[CH:11][CH:10]=1Participants
3
Reactant 1
Product 1
Reagents, catalysts & solvents 1
Procedure
At 20° C., and under 1000 mbar, 6.3 g of 1-(4-benzyloxyphenylsulphonyl)-5-ethoxypyrrolidin-2-one is hydrogenated in the presence of 1.2 g of catalyst (Pd at 10%), in 150 cm3 of 96° ethanol. After filtering, concentrating the filtrate, and crystallizing the residue from 96° ethanol, 2.5 g of the expected product is obtained, m.p. 162°-163° C.
Workup
- custom