(3R)-1-benzylpyrrolidin-3-amine → 3-[3-((R)-1-benzyl-pyrrolidin-3-yl)-ureido]-benzenesulfonamide
Reaction equation
[CH2:1]([N:8]1[CH2:12][CH2:11][C@@H:10]([NH2:13])[CH2:9]1)[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.C1([O:20][C:21](=O)[NH:22][C:23]2[CH:28]=[CH:27][CH:26]=[C:25]([S:29](=[O:32])(=[O:31])[NH2:30])[CH:24]=2)C=CC=CC=1>CO>[CH2:1]([N:8]1[CH2:12][CH2:11][C@@H:10]([NH:13][C:21](=[O:20])[NH:22][C:23]2[CH:24]=[C:25]([S:29]([NH2:30])(=[O:32])=[O:31])[CH:26]=[CH:27][CH:28]=2)[CH2:9]1)[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1Participants
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Conditions
- Temperature
- 80 °C
Procedure
A solution of (R)—N-benzyl-3-aminopyrrolidine (14.9 g, 0.084 mol) in methanol (100 mL) is added to a suspension of (3-sulfamoyl-phenyl)-carbamic acid phenyl ester (25 g, 0.084 mol). The resulting pale orange solution is stirred at mild reflux (DrySyn @ 80° C.) for two hours, then allowed to cool to room temperature, before the volatile components are removed under reduced pressure. The orange syrup is purified by flash column chromatography (silica; DCM/methanol 10:1) to give a beige foamed solid.