Cyanogen Bromide → HCID 13881444, Verbindung

HRID 894580Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 894580
[CH3:1][C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([CH3:8])[C:3]=1[NH:9][CH2:10][CH2:11][NH:12][C:13]1[C:18]([CH3:19])=[CH:17][CH:16]=[CH:15][C:14]=1[CH3:20].[N:21]#[C:22][Br:23]>C1(C)C(C)=CC=CC=1>[BrH:23].[CH3:1][C:2]1[CH:7]=[CH:6][CH:5]=[C:4]([CH3:8])[C:3]=1[N:9]1[CH2:10][CH2:11][N:12]([C:13]2[C:18]([CH3:19])=[CH:17][CH:16]=[CH:15][C:14]=2[CH3:20])[C:22]1=[NH:21]

Komponenten

4

Edukt 2

HCID 10476Cyanogen BromideHCID 3931947STK753189

Produkt 1

HCID 13881444HCID 13881444, VerbindungAusbeute 99,4 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 7237O-XyleneLösungsmittel3×

Versuchsvorschrift

500 ml of xylene are introduced into 1 liter four-necked flask equipped with a stirrer, reflux condenser, thermometer and dropping funnel of 100 ml capacity. 72.5 g (0.27 moles) of 1,2-bis(2',6'-dimethylphenyl-amino)-ethane are dissolved in the xylene, and a solution of 33.9 g (0.32 moles) of cyanogen bromide in 200 ml of xylene is added dropwise, within about 1.5 hours, to the stirred solution at an internal temperature of 110° to 115° C. After the addition the mixture is stirred for a further hour at 110° to 115° C. and then it is allowed to cool. The separated precipitate is filtered off, washed with xylene and diethyl ether, and dried at room temperature. 100.5 g (99.4%) of 1,3-bis(2',6'-dimethylphenyl)-2-imino-imidazolidine hydrobromide are obtained as colourless crystals melting at 289°-290° C.

Aufarbeitung

  1. customequipped with a stirrer
  2. temperaturereflux condenser
  3. additionAfter the addition the mixture
  4. temperatureto cool
  5. filtrationThe separated precipitate is filtered off
  6. washwashed with xylene and diethyl ether
  7. customdried at room temperature

Quellen und Nachweise

ORD-Eintrag
ord-24ede272932c465fbc3e1869daf58931
Quelldatensatz
uspto-grants-1981_08
Patentnummer
US04284642

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