Methyl 4-(3-bromopropyl)benzoate → 4-(3-{2-[4-Biphenyl-3-yl-3-(tert-butyl-dimethyl-silanyloxy)-butyl]-5-oxo-pyrrolidin-1-yl}-propyl)-benzoic acid methyl ester

HRID 1267443Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1267443
[C:1]1([C:25]2[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=2)[CH:6]=[CH:5][CH:4]=[C:3]([CH2:7][CH:8]([O:17][Si:18]([C:21]([CH3:24])([CH3:23])[CH3:22])([CH3:20])[CH3:19])[CH2:9][CH2:10][CH:11]2[NH:15][C:14](=[O:16])[CH2:13][CH2:12]2)[CH:2]=1.[CH3:31][O:32][C:33](=[O:44])[C:34]1[CH:39]=[CH:38][C:37]([CH2:40][CH2:41][CH2:42]Br)=[CH:36][CH:35]=1>>[CH3:31][O:32][C:33](=[O:44])[C:34]1[CH:39]=[CH:38][C:37]([CH2:40][CH2:41][CH2:42][N:15]2[C:14](=[O:16])[CH2:13][CH2:12][CH:11]2[CH2:10][CH2:9][CH:8]([O:17][Si:18]([C:21]([CH3:24])([CH3:23])[CH3:22])([CH3:20])[CH3:19])[CH2:7][C:3]2[CH:2]=[C:1]([C:25]3[CH:26]=[CH:27][CH:28]=[CH:29][CH:30]=3)[CH:6]=[CH:5][CH:4]=2)=[CH:36][CH:35]=1

Komponenten

3

Edukt 2

HCID 10801120Methyl 4-(3-bromopropyl)benzoateHCID 227124795-[4-Biphenyl-3-yl-3-(tert-butyl-dimethyl-silanyloxy)-butyl]-pyrrolidin-2-one

Produkt 1

HCID 692710644-(3-{2-[4-Biphenyl-3-yl-3-(tert-butyl-dimethyl-silanyloxy)-butyl]-5-oxo-pyrrolidin-1-yl}-propyl)-benzoic acid methyl esterAusbeute 74,2 %

Versuchsvorschrift

Analogous to the procedure described for Example 1A, Step D, 5-[4-biphenyl-3-yl-3-(tert-butyl-dimethyl-silanyloxy)-butyl]-pyrrolidin-2-one (5.116 g, 12.08 mmol) was alkylated with 4-(3-bromo-propyl)-benzoic acid methyl ester (3.41 g, 13.3 mmol) over 20 h. Purification by medium pressure chromatography using a solvent gradient (5:1 hexanes:EtOAc to 1:1 hexanes:EtOAc to EtOAc to 1% MeOH in CH2Cl2 to 5% MeOH in CH2Cl2) provided 4-(3-{2-[4-biphenyl-3-yl-3-(tert-butyl-dimethyl-silanyloxy)-butyl]-5-oxo-pyrrolidin-1-yl}-propyl)-benzoic acid methyl ester (5.38 g). 1H NMR (CDCl3) δ7.93 (d, 2H), 7.56 (d, 2H), 7.43 (m, 3H), 7.34 (m, 3H), 7.23 (m, 2H), 7.12 (m, 1H), 3.89 (m, 1H), 3.87 (s, 3H), 3.64 (m, 1H), 3.49 (m, 1H), 2.95-2.61 (m, 5H), 2.30 (m, 2H), 2.01 (m, 1H), 1.89-1.70 (m, 3H), 1.59-1.24 (m, 4H), 0.84 (s, 9H), −0.04 (d, 3H), −0.16 (d, 3H).

Aufarbeitung

  1. customPurification by medium pressure chromatography

Quellen und Nachweise

ORD-Eintrag
ord-7834786c47174b9b8917869bd6e935fe
Quelldatensatz
uspto-grants-2003_04
Patentnummer
US06552067B2

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