Chloroform → 4-Chloro-5,6,7,8-tetrahydro[1]benzothieno[2,3-d]pyrimidin-2-amine

HRID 2172896

Reaktionsgleichung

Reaktionsgleichung von HRID 2172896
[NH2:1][C:2]1[NH:3][C:4](=O)[C:5]2[C:10]3[CH2:11][CH2:12][CH2:13][CH2:14][C:9]=3[S:8][C:6]=2[N:7]=1.O=P(Cl)(Cl)[Cl:18].C(Cl)(Cl)Cl.CCCCCC>C(OC(=O)C)(=O)C>[Cl:18][C:4]1[C:5]2[C:10]3[CH2:11][CH2:12][CH2:13][CH2:14][C:9]=3[S:8][C:6]=2[N:7]=[C:2]([NH2:1])[N:3]=1

Komponenten

6

Edukt 4

HCID 6212ChloroformHCID 8058HexaneHCID 24813Phosphorus oxychlorideHCID 2901972-Amino-5,6,7,8-tetrahydro[1]benzothieno[2,3-d]pyrimidin-4(3h)-one

Produkt 1

HCID 129102004-Chloro-5,6,7,8-tetrahydro[1]benzothieno[2,3-d]pyrimidin-2-amineAusbeute 44 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 7918Acetic AnhydrideLösungsmittel

Versuchsvorschrift

To a 50 mL flask was added 10 (221 mg, 1 mmol) and 10 mL POCl3. The resulting mixture was refluxed for 2 h, and the solvent was removed under reduced pressure to afford a dark residue. To this was added 30 mL of CHCl3 and 300 mg of silica gel. The solvent was evaporated to afford a plug. Column chromatography of the plug with hexane: acetyl acetate=20:1 as eluent afford 105 mg (44%) of 11 as a yellow solid:

Aufarbeitung

  1. temperatureThe resulting mixture was refluxed for 2 h
  2. customthe solvent was removed under reduced pressure
  3. customto afford a dark residue
  4. customThe solvent was evaporated
  5. customto afford a plug

Quellen und Nachweise

ORD-Eintrag
ord-4357a1e6bed444b79c90c45b72e89348
Quelldatensatz
uspto-grants-2015_06
Patentnummer
US09056869B2

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