N-(2-hydroxyethyl)-N'-(2-benzyloxybenzyl)urea → N-(2-hydroxyethyl)-N'-(2-hydroxybenzyl)urea
Reaction equation
[OH:1][CH2:2][CH2:3][NH:4][C:5]([NH:7][CH2:8][C:9]1[CH:14]=[CH:13][CH:12]=[CH:11][C:10]=1[O:15]CC1C=CC=CC=1)=[O:6]>CO>[OH:1][CH2:2][CH2:3][NH:4][C:5]([NH:7][CH2:8][C:9]1[CH:14]=[CH:13][CH:12]=[CH:11][C:10]=1[OH:15])=[O:6]Participants
3
Reactant 1
Product 1
Reagents, catalysts & solvents 1
Procedure
59.6 g of N-(2-hydroxyethyl)-N'-(2-benzyloxybenzyl)urea are dissolved in 600 ml of methanol and hydrogenated in the presence of 6 g of Pd/C-catalysyt (5%). After 2 hours the hydrogenation ceases. The catalyst is suction-filtered, and the filtrate concentrated by evaporation in vacuo. The residue is recrystallised from 350 ml of ethyl acetate; the pure product melts at 100°-101°.
Workup
- filtrationThe catalyst is suction-filtered
- concentrationthe filtrate concentrated by evaporation in vacuo
- customThe residue is recrystallised from 350 ml of ethyl acetate
Sources & evidence
- ORD record
- ord-806c3ed7ed6a40ef8944a078b9af6fe5
- Source dataset
- uspto-grants-1987_01
- Patent number
- US04636511
Reaction notes
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