1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → Methyl Boc-glycylglycyl-L-phenylalaninate
Reaktionsgleichung
[C:1]([NH:8][CH2:9][C:10]([NH:12][CH2:13][C:14]([OH:16])=O)=[O:11])([O:3][C:4]([CH3:7])([CH3:6])[CH3:5])=[O:2].CCN=C=NCCCN(C)C.C1C=CC2N(O)N=NC=2C=1.[CH3:38][O:39][C:40](=[O:50])[C@H:41]([CH2:43][C:44]1[CH:49]=[CH:48][CH:47]=[CH:46][CH:45]=1)[NH2:42]>C1COCC1.CN(C)C1C=CN=CC=1.C(OCC)(=O)C>[CH3:38][O:39][C:40](=[O:50])[C@H:41]([CH2:43][C:44]1[CH:49]=[CH:48][CH:47]=[CH:46][CH:45]=1)[NH:42][C:14](=[O:16])[CH2:13][NH:12][C:10](=[O:11])[CH2:9][NH:8][C:1]([O:3][C:4]([CH3:5])([CH3:6])[CH3:7])=[O:2]Komponenten
Edukt 4
Produkt 1
Reagenzien, Katalysatoren, Lösungsmittel 3
Reaktionsbedingungen
- Temperatur
- 0 °C
Versuchsvorschrift
To N-Boc-glycylglycine (696 mg, 3.00 mmol, 1.00 equiv) in THF (10.0 mL) at 0° C. was added EDCI (1.15 g, 6.00 mmol, 2.00 equiv), HOBt (810 mg, 6.00 mmol, 2.00 equiv), n,n-diisopropylethyl amine (1.56 mL, 9.00 mmol, 3.00 equiv) and 4-(Dimethylamino)pyridine (36 mg, 0.030 mmol, 0.10 equiv) and L-phenylalanine methyl ester (647 mg, 3.00 mmol, 1.00 equiv). The reaction mixture was stirred for 1 hr at 0° C. and stirred for 12 h at room temperature. The reaction mixture was diluted with ethyl acetate and washed with water and dried (Na2SO4). The filtrate is concentrated in vacuo and the residue is purified by chromatography on silica gel eluting with DCM/MeOH 10:1 (v/v) to afford 1.10 g of the title compound as a colorless oil (93% yield).
Aufarbeitung
- stirringstirred for 12 h at room temperature
- washwashed with water
- dry with materialdried (Na2SO4)
- concentrationThe filtrate is concentrated in vacuo
- customthe residue is purified by chromatography on silica gel eluting with DCM/MeOH 10:1 (v/v)
Quellen und Nachweise
- ORD-Eintrag
- ord-aa99fb954c314011ad6fc93373dc5101
- Quelldatensatz
- uspto-grants-2015_05
- Patentnummer
- US09024093B2
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