Propargyl bromide → HCID 23004199, Verbindung

HRID 396417

Reaktionsgleichung

Reaktionsgleichung von HRID 396417
[OH:1][C:2]1[CH:11]=[C:10]2[C:5]([C:6]([CH3:13])=[CH:7][C:8](=[O:12])[O:9]2)=[CH:4][CH:3]=1.C([O-])([O-])=O.[K+].[K+].[CH2:20](Br)[C:21]#[CH:22]>CC(C)=O>[C:20]([O:1][C:2]1[CH:11]=[C:10]2[C:5]([C:6]([CH3:13])=[CH:7][C:8](=[O:12])[O:9]2)=[CH:4][CH:3]=1)#[C:21][CH3:22]

Komponenten

5

Edukt 3

HCID 7842Propargyl bromideHCID 11430Potassium CarbonateHCID 52805674-Methylumbelliferone

Produkt 1

HCID 23004199HCID 23004199, Verbindung

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 180AcetoneLösungsmittel

Versuchsvorschrift

A mixture of 7-hydroxy-4-methylcoumarin (1.76 g, 0.01 mol), K2CO3 (2.8 g, 0.02 mol), Kl (0.166 g, 0.001 mol), propargyl bromide (1.78 g, 0.015 mol) and acetone (100 mL) was refluxed 10 h and hot filtered. The solvent was evaporated and the residue was crystallized by toluene. This yields 1.93 g of a product with the following characteristics: m.p.140-141° C.; 1H NMR (CDCl3) δ: 2.4 (s), 2.69 (m), 4.8 (s, 2H), 6.15-7.58 (m, 4H).

Aufarbeitung

  1. temperaturewas refluxed 10 h
  2. customThe solvent was evaporated
  3. customthe residue was crystallized by toluene

Quellen und Nachweise

ORD-Eintrag
ord-5809cee91b294671bfad6c4a06877e28
Quelldatensatz
uspto-grants-2003_08
Patentnummer
US06608089B2

Verknüpfte Notizen

Wird geladen…