Terephthalaldehyde → 3-Cyanostilbene-4'-aldehyde

HRID 329343

Reaktionsgleichung

Reaktionsgleichung von HRID 329343
[CH:1]1[C:6]([CH:7]=[O:8])=[CH:5][CH:4]=[C:3]([CH:9]=O)[CH:2]=1.C(OP([CH2:19][C:20]1[CH:21]=[C:22]([CH:25]=[CH:26][CH:27]=1)[C:23]#[N:24])(OCC)=O)C>>[C:23]([C:22]1[CH:21]=[C:20]([CH:19]=[CH:9][C:3]2[CH:2]=[CH:1][C:6]([CH:7]=[O:8])=[CH:5][CH:4]=2)[CH:27]=[CH:26][CH:25]=1)#[N:24].[C:23]([C:22]1[CH:21]=[C:20]([CH:27]=[CH:26][CH:25]=1)[CH:19]=[CH:9][C:3]1[CH:4]=[CH:5][C:6]([CH:7]=[CH:19][C:20]2[CH:27]=[CH:26][CH:25]=[C:22]([C:23]#[N:24])[CH:21]=2)=[CH:1][CH:2]=1)#[N:24]

Komponenten

4

Edukt 2

HCID 12173TerephthalaldehydeHCID 21466817Phosphonic acid, [(3-cyanophenyl)methyl]-, diethyl ester

Produkt 2

HCID 534278441,4-Di(m-cyanostyryl)benzeneHCID 538516683-Cyanostilbene-4'-aldehydeAusbeute 2 %

Versuchsvorschrift

6.7 g of terephthaldehyde are reacted with 12.8 g of m-diethylphosphonomethylbenzonitrile (99.2%) in accordance with Example 1. The reaction temperature is kept initially at 0°-5° C. for 1/2 hour and allowed to rise overnight to 22° C. 3-Cyanostilbene-4'-aldehyde containing 2% of 1,4-di(m-cyanostyryl)benzene is obtained in a yield of 8.0 g after working up as described in Example 1, but without dilution with water.

Quellen und Nachweise

ORD-Eintrag
ord-9abaffc3375a4ae9bcbfaca8fe747c7a
Quelldatensatz
uspto-grants-1990_01
Patentnummer
US04891153

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