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Iodoethane → 2-(4-{[(2R,3S,4R,5S)-3-(3-chloro-2-fluoro-phenyl)-4-(4-chloro-2-fluoro-phenyl)-4-cyano-5-(2,2-dimethyl-propyl)-pyrrolidine-2-carbonyl]-amino}-phenyl)-butyric acid methyl ester

HRID 1807241
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1807241
[CH3:1][O:2][C:3](=[O:42])[CH2:4][C:5]1[CH:10]=[CH:9][C:8]([NH:11][C:12]([C@H:14]2[C@H:18]([C:19]3[CH:24]=[CH:23][CH:22]=[C:21]([Cl:25])[C:20]=3[F:26])[C@:17]([C:29]3[CH:34]=[CH:33][C:32]([Cl:35])=[CH:31][C:30]=3[F:36])([C:27]#[N:28])[C@H:16]([CH2:37][C:38]([CH3:41])([CH3:40])[CH3:39])[NH:15]2)=[O:13])=[CH:7][CH:6]=1.[Li+].C[Si]([N-][Si](C)(C)C)(C)C.[CH2:53](I)[CH3:54]>C1COCC1.[Cl-].[NH4+]>[CH3:1][O:2][C:3](=[O:42])[CH:4]([C:5]1[CH:6]=[CH:7][C:8]([NH:11][C:12]([C@H:14]2[C@H:18]([C:19]3[CH:24]=[CH:23][CH:22]=[C:21]([Cl:25])[C:20]=3[F:26])[C@:17]([C:29]3[CH:34]=[CH:33][C:32]([Cl:35])=[CH:31][C:30]=3[F:36])([C:27]#[N:28])[C@H:16]([CH2:37][C:38]([CH3:39])([CH3:41])[CH3:40])[NH:15]2)=[O:13])=[CH:9][CH:10]=1)[CH2:53][CH3:54]
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Komponenten

6

Edukt 3

HCID 6340IodoethaneHCID 2733832Lithium hexamethyldisilazaneHCID 59249533(4-{[(2R,3S,4R,5S)-3-(3-chloro-2-fluoro-phenyl)-4-(4-chloro-2-fluoro-phenyl)-4-cyano-5-(2,2-dimethyl-propyl)-pyrrolidine-2-carbonyl]-amino}-phenyl)-acetic acid methyl ester

Produkt 1

HCID 592496832-(4-{[(2R,3S,4R,5S)-3-(3-chloro-2-fluoro-phenyl)-4-(4-chloro-2-fluoro-phenyl)-4-cyano-5-(2,2-dimethyl-propyl)-pyrrolidine-2-carbonyl]-amino}-phenyl)-butyric acid methyl ester
Ausbeute 53,9 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 8028TetrahydrofuranLösungsmittelHCID 25517Ammonium ChlorideLösungsmittel

Reaktionsbedingungen

Temperatur
-78 °C

Versuchsvorschrift

A mixture of chiral (4-{[(2R,3S,4R,5S)-3-(3-chloro-2-fluoro-phenyl)-4-(4-chloro-2-fluoro-phenyl)-4-cyano-5-(2,2-dimethyl-propyl)-pyrrolidine-2-carbonyl]-amino}-phenyl)-acetic acid methyl ester (22 mg, 0.036 mmol) was dissolved in THF (1 mL) and cooled to −78° C., then LHMDS (1 mL, 1M in THF) was added and the mixture stirred 15 min at −78° C. Ethyl iodide (0.1 mL, 0.107 mmol) was added and stirred for 1 h at −78° C., then warmed to 1 h at room temperature. The mixture was diluted with sat'd ammonium chloride solution extracted with ethyl acetate, the organic layer was separated then concentrated under reduced pressure to afford an oil that was purified by silica column chromatography (4 g Analogix column, 1-100% EtOAc/heptane) to afford 2-(4-{[(2R,3S,4R,5S)-3-(3-chloro-2-fluoro-phenyl)-4-(4-chloro-2-fluoro-phenyl)-4-cyano-5-(2,2-dimethyl-propyl)-pyrrolidine-2-carbonyl]-amino}-phenyl)-butyric acid methyl ester as a light yellow foam (12.4 mg, 53.9%). LCMS (ES+) m/z Calcd for C34H35Cl2F2N3O3+H [(M+H)+]: 641.20. found: 642.2.

Aufarbeitung

  1. stirringstirred for 1 h at −78° C.
  2. temperaturewarmed to 1 h at room temperature
  3. extractionextracted with ethyl acetate
  4. customthe organic layer was separated
  5. concentrationthen concentrated under reduced pressure
  6. customto afford an oil that
  7. customwas purified by silica column chromatography (4 g Analogix column, 1-100% EtOAc/heptane)

Quellen und Nachweise

ORD-Eintrag
ord-31f42802f46144e5aeb13c36213bb7bd
Quelldatensatz
uspto-grants-2013_01
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08354444B2

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