O-Benzylhydroxylamine → N-(Benzyloxy)-3-methyl-4-oxo-3,4-dihydroimidazo[5,1-d][1,2,3,5]tetrazine-8-carboxamide

HRID 570973

Reaktionsgleichung

Reaktionsgleichung von HRID 570973
[CH2:1]([O:8][NH2:9])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[CH3:10][N:11]1[C:16](=[O:17])[N:15]2[CH:18]=[N:19][C:20]([C:21](Cl)=[O:22])=[C:14]2[N:13]=[N:12]1>C1COCC1.O>[CH2:1]([O:8][NH:9][C:21]([C:20]1[N:19]=[CH:18][N:15]2[C:16](=[O:17])[N:11]([CH3:10])[N:12]=[N:13][C:14]=12)=[O:22])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1

Komponenten

5

Edukt 2

HCID 102313O-BenzylhydroxylamineHCID 110202383-Methyl-4-oxo-3,4-dihydroimidazo[5,1-d][1,2,3,5]tetrazine-8-carbonyl chloride

Produkt 1

HCID 49869276N-(Benzyloxy)-3-methyl-4-oxo-3,4-dihydroimidazo[5,1-d][1,2,3,5]tetrazine-8-carboxamideAusbeute 63 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962WaterLösungsmittelHCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

O-benzylhydroxylamine (195 μL, 1.68 mmol, 2 eq.) was added to a solution of crude 3-methyl-4-oxo-3,4-dihydroimidazo[5,1-d][1,2,3,5]tetrazine-8-carbonyl chloride (200 mg, 0.84 mmol; see Arrowsmith et al., J. Med. Chem., 2002, Vol. 45, No. 25, p. 5458) in THF (6 mL) and a precipitate formed instantly. The resulting suspension was stirred for 1 hour and 30 minutes and was then poured into ice. The suspension was diluted with water and the precipitate was filtered and washed successively with water, ethyl acetate and diethyl ether to give 158 mg of the pure title compound as an off-white solid (63% yield). δH (DMSO-d6): 11.9 (1H, s), 8.85 (1H, s), 7.42-7.50 (2H, m), 7.36-7.42 (3H, m), 4.96 (2H, s), 3.88 (3H, s).

Aufarbeitung

  1. additionwas then poured into ice
  2. filtrationthe precipitate was filtered
  3. washwashed successively with water, ethyl acetate and diethyl ether

Quellen und Nachweise

ORD-Eintrag
ord-2ba70a7f72674459abcd25cdb7b935b0
Quelldatensatz
uspto-grants-2015_05
Patentnummer
US09024018B2

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