Ammonia → 1-(3-Methylanilino)-4-(4-pyridylmethyl)phthalazine

HRID 49885

Reaktionsgleichung

Reaktionsgleichung von HRID 49885
O=P12OP3(OP(OP(O3)(O1)=O)(=O)O2)=O.Cl.C(N(CC)CC)C.[NH2:23][C:24]1[CH:29]=[CH:28][CH:27]=[C:26]([CH3:30])[CH:25]=1.[N:31]1[CH:36]=[CH:35][C:34]([CH2:37][C:38]2[C:47]3[C:42](=[CH:43][CH:44]=[CH:45][CH:46]=3)[C:41](=O)[NH:40][N:39]=2)=[CH:33][CH:32]=1.CN(C)C(=O)N(C)C.N>O.ClCCl>[CH3:30][C:26]1[CH:25]=[C:24]([CH:29]=[CH:28][CH:27]=1)[NH:23][C:41]1[C:42]2[C:47](=[CH:46][CH:45]=[CH:44][CH:43]=2)[C:38]([CH2:37][C:34]2[CH:35]=[CH:36][N:31]=[CH:32][CH:33]=2)=[N:39][N:40]=1

Komponenten

9

Edukt 6

HCID 222AmmoniaHCID 7934m-ToluidineHCID 11130Triethylamine hydrochlorideHCID 12437TetramethylureaHCID 14812Phosphorus oxide (P4O10)HCID 7899544-(4-Pyridylmethyl)-1(2H)-phtalazinone

Produkt 1

HCID 64193871-(3-Methylanilino)-4-(4-pyridylmethyl)phthalazine

Reagenzien, Katalysatoren, Lösungsmittel 2

HCID 962WaterLösungsmittel2×HCID 6344DichloromethaneLösungsmittel

Reaktionsbedingungen

Temperatur
200 °C

Versuchsvorschrift

A mixture of 2.39 g (16.8 mmol) phosphorus pentoxide, 2.31 g (16.8 mmol) triethylamine hydrochloride, and 1.82 ml (16.8 mmol) m-toluidine is heated and stirred in a nitrogen atmosphere at 200° C. until a homogeneous melt has formed. To the melt, 1 g (4.2 mmol) 4-(4-pyridylmethyl)-1(2H)-phthalazinone is added and the reaction mixture stirred for a further 3.5 h at 205° C. After cooling to about 170° C., 4 ml tetramethylurea is added to the reaction mixture, followed by 2 ml water at about 110° C. The mixture is stirred for a further 30 min while cooling to RT and then distributed between dichloromethane and a mixture of 20 ml water and 5 ml conc. ammonia. The organic phase dried over sodium sulfate is concentrated by evaporation and the residue purified on silica gel by flash chromatography using acetate and acetate/methanol (99:1 and 19:1). Title compound is obtained after crystallization of the product-containing fractions from acetonitrile and subsequent recrystallization from acetate; m.p. 141-143° C.; ESI-MS: (M+H)+=327.

Aufarbeitung

  1. temperatureis heated
  2. customhas formed
  3. stirringthe reaction mixture stirred for a further 3.5 h at 205° C
  4. temperatureAfter cooling to about 170° C.
  5. stirringThe mixture is stirred for a further 30 min
  6. temperaturewhile cooling to RT
  7. dry with materialThe organic phase dried over sodium sulfate
  8. concentrationis concentrated by evaporation
  9. customthe residue purified on silica gel by flash chromatography

Quellen und Nachweise

ORD-Eintrag
ord-2d57d14ff339450ebd4864938eadbeb0
Quelldatensatz
uspto-grants-2004_03
Patentnummer
US06710047B2

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