Benzylamine → HCID 11268889, compound
Reaction equation
[O:1]1[CH2:3][CH:2]1[CH2:4][N:5]([CH2:15][CH:16]1[CH2:18][O:17]1)[S:6]([C:9]1[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=1)(=[O:8])=[O:7].[CH2:19]([NH2:26])[C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1>C(O)C>[CH2:19]([N:26]1[CH2:3][CH:2]([OH:1])[CH2:4][N:5]([S:6]([C:9]2[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=2)(=[O:8])=[O:7])[CH2:15][CH:16]([OH:17])[CH2:18]1)[C:20]1[CH:25]=[CH:24][CH:23]=[CH:22][CH:21]=1Participants
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Procedure
Ethanol (900 mL, 18 vol) was added to the chlorobenzene solution from step (i) above. Benzylamine (24.3 mL, 0.7 equiv.) was added in one portion (no exotherm seen) and the reaction was heated at reflux for 3 hours. More benzylamine was added (4.8 mL) and the solution was heated for a further 3 hours. More benzylamine (2.4 mL) was added and the mixture was heated at reflux for 1 hour. Ethanol (500 mL) was removed by atmospheric pressure distillation. Chlorobenzene (200 mL) was added and a further 400 mL of solvent was removed by distillation. Chlorobenzene (100 mL) was added and 150 mL of solvent was removed by reduced pressure distillation (50 mbar). The crude product (now theoretically in 250 mL of chlorobenzene) was used in the next step.
Workup
- temperaturewas heated
- temperatureat reflux for 3 hours
- temperaturethe solution was heated for a further 3 hours
- temperaturethe mixture was heated
- temperatureat reflux for 1 hour
- customEthanol (500 mL) was removed by atmospheric pressure distillation
- additionChlorobenzene (200 mL) was added
- customa further 400 mL of solvent was removed by distillation
- additionChlorobenzene (100 mL) was added
- custom150 mL of solvent was removed by reduced pressure distillation (50 mbar)
Sources & evidence
- ORD record
- ord-930bdaf80929421891c9375fdf25c19e
- Source dataset
- uspto-grants-2008_10
- Patent number
- US07439355B2
Reaction notes
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