Nitroethane → Tert-butyl (6-(3-methylisoxazol-5-yl)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)methylcarbamate

HRID 40205

Reaktionsgleichung

Reaktionsgleichung von HRID 40205
[N+:1]([CH2:4][CH3:5])([O-:3])=O.C1(N=C=O)C=CC=CC=1.[C:15]([C:17]1[CH:18]=[CH:19][C:20]2[N:21]([C:23]([CH2:26][NH:27][C:28](=[O:34])[O:29][C:30]([CH3:33])([CH3:32])[CH3:31])=[N:24][N:25]=2)[N:22]=1)#[CH:16].C(N(CC)CC)C>C1C=CC=CC=1>[C:30]([O:29][C:28](=[O:34])[NH:27][CH2:26][C:23]1[N:21]2[N:22]=[C:17]([C:15]3[O:3][N:1]=[C:4]([CH3:5])[CH:16]=3)[CH:18]=[CH:19][C:20]2=[N:25][N:24]=1)([CH3:33])([CH3:32])[CH3:31]

Komponenten

6

Reaktionsbedingungen

Temperatur
50 °C

Versuchsvorschrift

To a solution of nitroethane (1.02 ml, 14.3 mmol) in benzene (50 mL) was added phenyl isocyanate (3.12 ml, 28.5 mmol). The mixture was stirred at 50° C. for twenty minutes followed by the addition of tert-butyl (6-ethynyl-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)methylcarbamate (3.00 g, 11.0 mmol) and triethylamine (0.0765 ml, 0.549 mmol). The mixture was stirred at 50° C. for six hours then at room temperature overnight. The mixture was cooled to room temperature, filtered and the resulting brown precipitate was washed with additional benzene. The filtrate was concentrated to yield the product as a black solid. MS m/z=331.1 [M+1]+. Calc'd for C15H18N6O3: 330.1.

Aufarbeitung

  1. stirringThe mixture was stirred at 50° C. for six hours
  2. customat room temperature
  3. customovernight
  4. temperatureThe mixture was cooled to room temperature
  5. filtrationfiltered
  6. washthe resulting brown precipitate was washed with additional benzene
  7. concentrationThe filtrate was concentrated

Quellen und Nachweise

ORD-Eintrag
ord-d952825d729b4d20be4a45b727aa6332
Quelldatensatz
uspto-grants-2013_09
Patentnummer
US08524900B2

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