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 352594Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 352594
[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-abec564d4f9e4bcf8baf8e267a1e05b3
Quelldatensatz
uspto-grants-2004_06
Patentnummer
US06747054B2

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