Ceric ammonium nitrate → 3-Benzyl-2-(biphenyl-4-ylmethyl)-5-methyl-2H-pyrazolo[3,4-d]pyrimidine-4,6(5H,7H)-dione

HRID 1465984

Reaktionsgleichung

Reaktionsgleichung von HRID 1465984
[N+]([O-])([O-])=O.[Ce+4].[NH4+].[N+]([O-])([O-])=O.[N+]([O-])([O-])=O.[N+]([O-])([O-])=O.[N+]([O-])([O-])=O.[CH2:23]([C:30]1[N:31]([CH2:51][C:52]2[CH:57]=[CH:56][C:55]([C:58]3[CH:63]=[CH:62][CH:61]=[CH:60][CH:59]=3)=[CH:54][CH:53]=2)[N:32]=[C:33]2[C:38]=1[C:37](=[O:39])[N:36]([CH3:40])[C:35](=[O:41])[N:34]2CC1C=CC(OC)=CC=1)[C:24]1[CH:29]=[CH:28][CH:27]=[CH:26][CH:25]=1.O=[N+]([O-])[O-].[O-][N+](=O)[O-].[O-][N+](=O)[O-].[O-][N+](=O)[O-].[O-][N+](=O)[O-].[O-][N+](=O)[O-].[Ce+4].[NH4+].[NH4+]>O.C1COCC1>[CH2:23]([C:30]1[N:31]([CH2:51][C:52]2[CH:53]=[CH:54][C:55]([C:58]3[CH:63]=[CH:62][CH:61]=[CH:60][CH:59]=3)=[CH:56][CH:57]=2)[N:32]=[C:33]2[C:38]=1[C:37](=[O:39])[N:36]([CH3:40])[C:35](=[O:41])[NH:34]2)[C:24]1[CH:25]=[CH:26][CH:27]=[CH:28][CH:29]=1

Komponenten

6

Edukt 3

HCID 180504Ceric ammonium nitrate2×HCID 9869224Ammonium cerium (IV) nitrateHCID 667956863-benzyl-2-(biphenyl-4-ylmethyl)-7-(4-methoxybenzyl)-5-methyl-2H-pyrazolo[3,4-d]pyrimidine-4,6(5H,7H)-dione

Produkt 1

HCID 1363512593-Benzyl-2-(biphenyl-4-ylmethyl)-5-methyl-2H-pyrazolo[3,4-d]pyrimidine-4,6(5H,7H)-dioneAusbeute 37 %

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962WaterLösungsmittelHCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

A solution of ammonium cerium (IV) nitrate (204 mg, 0.371 mmol) in water (0.6 mL) is added to a solution of 3-benzyl-2-(biphenyl-4-ylmethyl)-7-(4-methoxybenzyl)-5-methyl-2H-pyrazolo[3,4-d]pyrimidine-4,6(5H,7H)-dione (40.3 mg, 0.0743 mmol) in THF (2 mL). The resulting orange solution is stirred at room temperature overnight. Another batch of CAN (204 mg, 0.371 mmol) is added and the mixture is stirred for 3 hours, and then the third batch of CAN (204 mg) is added, and the mixture is stirred at r.t. overnight. The reaction mixture is evaporated to dryness. The residue is treated with brine, and extracted with methylene chloride five times. The organic phase is combined and concentrated. The residue is purified by chromatography to give 11.6 mg product as white solids (Yield: 36.9%). 1H NMR (400 MHz, acetone-d6) g3.27 (s, 3H), 4.51 (s, 2H), 5.33 (s, 2H), 7.13-7.62 (m, 14H), 10.26 (s, 1H). MS (FAB) m/z 423.2 [M+H]+.

Aufarbeitung

  1. stirringthe mixture is stirred for 3 hours
  2. stirringthe mixture is stirred at r.t. overnight
  3. customThe reaction mixture is evaporated to dryness
  4. additionThe residue is treated with brine
  5. extractionextracted with methylene chloride five times
  6. concentrationconcentrated
  7. customThe residue is purified by chromatography

Quellen und Nachweise

ORD-Eintrag
ord-5fe11f2fb09c4373902d54b6d29a6020
Quelldatensatz
uspto-grants-2015_04
Patentnummer
US09000001B2

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