Carbon Tetrachloride → 7-Chloromethyl-4-(3-thienyl)coumarin

HRID 2379178

Reaktionsgleichung

Reaktionsgleichung von HRID 2379178
O[CH2:2][C:3]1[CH:12]=[C:11]2[C:6]([C:7]([C:14]3[CH:18]=[CH:17][S:16][CH:15]=3)=[CH:8][C:9](=[O:13])[O:10]2)=[CH:5][CH:4]=1.CN(C)P(N(C)C)N(C)C.C(Cl)(Cl)(Cl)[Cl:30]>C1COCC1.CCOCC>[Cl:30][CH2:2][C:3]1[CH:12]=[C:11]2[C:6]([C:7]([C:14]3[CH:18]=[CH:17][S:16][CH:15]=3)=[CH:8][C:9](=[O:13])[O:10]2)=[CH:5][CH:4]=1

Komponenten

6

Versuchsvorschrift

To a solution of the alcohol from Step 1 (1.65 g) and hexamethylphosphorous triamide in 35 mL THF at 0° C. was added CCl4 (1.3 mL) and the mixture stirred for 30 min. The mixture was diluted with Et2O, filtered, concentrated and the residue chromatographed (30% EtOAc/hexane) to provide the title compound as a solid, m.p. 125°-127° C.

Aufarbeitung

  1. filtrationfiltered
  2. concentrationconcentrated
  3. customthe residue chromatographed (30% EtOAc/hexane)

Quellen und Nachweise

ORD-Eintrag
ord-4828045f914c4333a1b7673ed910096b
Quelldatensatz
uspto-grants-1994_11
Patentnummer
US05360815

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