Benzophenone imine → 2-(R)-[2-(R)-(Benzhydrylidene-amino)-1-(S)-hydroxy-3-phenylpropyl]-piperazine-1-carboxylic acid tert-butyl ester
Reaktionsgleichung
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][NH:11][CH2:10][C@@H:9]1[C@@H:14]([OH:24])[C@H:15]([NH2:23])[CH2:16][C:17]1[CH:22]=[CH:21][CH:20]=[CH:19][CH:18]=1)=[O:7])([CH3:4])([CH3:3])[CH3:2].[C:25](=N)([C:32]1[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=1)[C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1>ClCCl>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][NH:11][CH2:10][C@@H:9]1[C@@H:14]([OH:24])[C@H:15]([N:23]=[C:25]([C:26]1[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=1)[C:32]1[CH:37]=[CH:36][CH:35]=[CH:34][CH:33]=1)[CH2:16][C:17]1[CH:18]=[CH:19][CH:20]=[CH:21][CH:22]=1)=[O:7])([CH3:4])([CH3:2])[CH3:3]Komponenten
4
Edukt 2
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
Dissolve 2-(R)-(2-(R)-amino-1-(S)-hydroxy-3-phenylpropyl)-piperazine-1-carboxylic acid tert-butyl ester (98 mg, 0.29 mmol) in dry dichloromethane and add benzophenoneimine (0.083 ml, 0.49 mmol) by syringe, stir overnight, and purify (silica gel chromatography, eluting with ethyl acetate and 98:2 ethyl acetate:triethylamine) to obtain (144 mg, 95% yield) of the title compound (144 mg, 95%) as a colorless oil.
Aufarbeitung
- custompurify
- wash(silica gel chromatography, eluting with ethyl acetate and 98:2 ethyl acetate:triethylamine)
Quellen und Nachweise
- ORD-Eintrag
- ord-0dec55a79ff04f539ac1e89bf81dcd9f
- Quelldatensatz
- uspto-grants-2009_11
- Patentnummer
- US07618978B2
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