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Triethylamine → (R)-tert-butyl 1-(2-chloro-7-methylquinazolin-4-yl)pyrrolidin-3-ylcarbamate

HRID 2406193
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 2406193
[Cl:1][C:2]1[N:11]=[C:10](Cl)[C:9]2[C:4](=[CH:5][C:6]([CH3:13])=[CH:7][CH:8]=2)[N:3]=1.[NH:14]1[CH2:18][CH2:17][C@@H:16]([NH:19][C:20](=[O:26])[O:21][C:22]([CH3:25])([CH3:24])[CH3:23])[CH2:15]1.CCN(CC)CC>ClCCl>[Cl:1][C:2]1[N:11]=[C:10]([N:14]2[CH2:18][CH2:17][C@@H:16]([NH:19][C:20](=[O:26])[O:21][C:22]([CH3:24])([CH3:23])[CH3:25])[CH2:15]2)[C:9]2[C:4](=[CH:5][C:6]([CH3:13])=[CH:7][CH:8]=2)[N:3]=1
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Komponenten

5

Edukt 3

HCID 8471TriethylamineHCID 1514397(3R)-(+)-3-(tert-Butoxycarbonylamino)pyrrolidineHCID 219419832,4-Dichloro-7-methylquinazoline

Produkt 1

HCID 59758791(R)-tert-butyl 1-(2-chloro-7-methylquinazolin-4-yl)pyrrolidin-3-ylcarbamateAusbeute 83 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344Dichloromethane
Lösungsmittel
2×

Versuchsvorschrift

2,4-Dichloro-7-methylquinazoline (2.0 g, 9.4 mmol) was suspended in 40 mL of dichloromethane under an N2 atmosphere and cooled to 0° C. (R)-tert-Butyl pyrrolidin-3-ylcarbamate (1.75 g, 9.4 mmol) was dissolved in a solution of 10 mL of dichloromethane and Et3N (2.62 mL, 18.8 mmol) and added dropwise to the above reaction mixture. The reaction was warmed to RT and stirred for 16 hours. The reaction was quenched with water, extracted with DCM, dried over Na2SO4, filtered, and concentrated under reduced pressure. Purification via silica gel chromatography using 0%-10% EtOAc in DCM gave (R)-tert-butyl 1-(2-chloro-7-methylquinazolin-4-yl)pyrrolidin-3-ylcarbamate (2.82 g, 83% yield). LC/MS: m/z 363.1 (M+H)+ at 3.26 min (10%-99% CH3CN (0.035% TFA)/H2O (0.05% TFA)).

Aufarbeitung

  1. additionadded dropwise to the above reaction mixture
  2. customThe reaction was quenched with water
  3. extractionextracted with DCM
  4. dry with materialdried over Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated under reduced pressure
  7. customPurification via silica gel chromatography

Quellen und Nachweise

ORD-Eintrag
ord-beab9ca647b1432393b9d5f5cb444c15
Quelldatensatz
uspto-grants-2014_08
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08809353B2

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