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Isopropyl chloroformate → 4-{5-[(2-Phenyl-5-trifluoromethyl-oxazole-4-carbonyl)-amino]-pyridin-2-yl}-piperazine-1-carboxylic acid isopropyl ester

HRID 1691921
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 1691921
Cl.[N:2]1([C:8]2[N:13]=[CH:12][C:11]([NH:14][C:15]([C:17]3[N:18]=[C:19]([C:26]4[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=4)[O:20][C:21]=3[C:22]([F:25])([F:24])[F:23])=[O:16])=[CH:10][CH:9]=2)[CH2:7][CH2:6][NH:5][CH2:4][CH2:3]1.C(N(CC)CC)C.[CH:39]([O:42][C:43](Cl)=[O:44])([CH3:41])[CH3:40]>C(Cl)Cl>[CH:39]([O:42][C:43]([N:5]1[CH2:6][CH2:7][N:2]([C:8]2[CH:9]=[CH:10][C:11]([NH:14][C:15]([C:17]3[N:18]=[C:19]([C:26]4[CH:31]=[CH:30][CH:29]=[CH:28][CH:27]=4)[O:20][C:21]=3[C:22]([F:24])([F:25])[F:23])=[O:16])=[CH:12][N:13]=2)[CH2:3][CH2:4]1)=[O:44])([CH3:41])[CH3:40]
KomponentenReaktionsbedingungenVersuchsvorschriftAufarbeitungQuellen und NachweiseNotizen zur Reaktion

Komponenten

5

Edukt 3

HCID 7917Isopropyl chloroformateHCID 8471TriethylamineHCID 667381792-Phenyl-5-trifluoromethyl-oxazole-4-carboxylic acid (6-piperazin-1-yl-pyridin-3-yl)-amide hydrochloride salt

Produkt 1

HCID 576520844-{5-[(2-Phenyl-5-trifluoromethyl-oxazole-4-carbonyl)-amino]-pyridin-2-yl}-piperazine-1-carboxylic acid isopropyl ester

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6344
Dichloromethane
Lösungsmittel

Reaktionsbedingungen

Temperatur
0 °C

Versuchsvorschrift

To a suspension of 2-phenyl-5-trifluoromethyl-oxazole-4-carboxylic acid (6-piperazin-1-yl-pyridin-3-yl)-amide hydrochloride salt (50 mg, 0.102 mmol) in methylene chloride (6 mL) was added triethylamine (0.1 mL). The clear solution was cooled in an ice bath and isopropylchloroformate (1M in toluene, 0.2 mL) was added. The mixture was stirred at 0° C. for 30 minutes and at room temperature for 1 hr. The solvents were evaporated and the residue was triturated with methanol. The precipitate was filtered and dried to give 4-{5-[(2-phenyl-5-trifluoromethyl-oxazole-4-carbonyl)-amino]-pyridin-2-yl}-piperazine-1-carboxylic acid isopropyl ester (32.4 mg). LC-MS calcd for C24H24F3N5O4 (m/e) 503.2, obsd 503.8 (M+H). The NMR spectrum obtained on the sample is compatible with its structure.

Aufarbeitung

  1. temperatureThe clear solution was cooled in an ice bath
  2. customThe solvents were evaporated
  3. customthe residue was triturated with methanol
  4. filtrationThe precipitate was filtered
  5. customdried

Quellen und Nachweise

ORD-Eintrag
ord-2899ee17df974f0e9b8605877d732415
Quelldatensatz
uspto-grants-2012_04
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08153644B2

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