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

HRID 2406197
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 2406197
[Cl:1][C:2]1[N:11]=[C:10]([N:12]2[CH2:16][CH2:15][C@@H:14]([NH2:17])[CH2:13]2)[C:9]2[C:4](=[CH:5][C:6]([CH3:18])=[CH:7][CH:8]=2)[N:3]=1.CCN(CC)CC.Cl[C:27]([O:29][CH2:30][C:31]([CH3:34])([CH3:33])[CH3:32])=[O:28]>C1COCC1>[Cl:1][C:2]1[N:11]=[C:10]([N:12]2[CH2:16][CH2:15][C@@H:14]([NH:17][C:27](=[O:28])[O:29][CH2:30][C:31]([CH3:34])([CH3:33])[CH3:32])[CH2:13]2)[C:9]2[C:4](=[CH:5][C:6]([CH3:18])=[CH:7][CH:8]=2)[N:3]=1
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Komponenten

5

Edukt 3

HCID 8471TriethylamineHCID 33521852,2-Dimethylpropyl carbonochloridateHCID 59758793(R)-1-(2-chloro-7-methylquinazolin-4-yl)pyrrolidin-3-amine

Produkt 1

HCID 59758785(R)-neopentyl 1-(2-chloro-7-methylquinazolin-4-yl)pyrrolidin-3-ylcarbamateAusbeute 70 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028
Tetrahydrofuran
Lösungsmittel

Versuchsvorschrift

A solution of (R)-1-(2-chloro-7-methylquinazolin-4-yl)pyrrolidin-3-amine (100 mg, 0.38 mmol) in 2 mL of THF was cooled to −30° C. To it was added Et3N followed by the addition of neopentyl chloroformate (53 μL, 0.38 mmol) dropwise. The reaction was complete after 5 minutes. The reaction was quenched with water, the layers separated, and the aqueous layer was twice extracted with CH2Cl2. The combined organic layers were dried over Na2SO4, filtered, and concentrated under reduced pressure. Purification via silica gel chromatography using 0%-10% EtOAc in DCM gave (R)-neopentyl 1-(2-chloro-7-methylquinazolin-4-yl)pyrrolidin-3-ylcarbamate (100 mg, 70% yield). LC/MS: m/z 377.5 (M+H)+ at 2.90 min (10%-99% CH3CN (0.035% TFA)/H2O (0.05% TFA)).

Aufarbeitung

  1. customThe reaction was quenched with water
  2. customthe layers separated
  3. extractionthe aqueous layer was twice extracted with CH2Cl2
  4. dry with materialThe combined organic layers were dried over Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated under reduced pressure
  7. customPurification via silica gel chromatography

Quellen und Nachweise

ORD-Eintrag
ord-bca84e6ea2df4e0488190c5f0b39fba9
Quelldatensatz
uspto-grants-2014_08
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08809353B2

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