Hydrochloric Acid → 4'-Hexyl[1,1'-biphenyl]-4-carboxylic acid

HRID 328305Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 328305
[CH2:1]([C:7]1[CH:12]=[CH:11][C:10]([C:13]2[CH:18]=[CH:17]C(C#N)=[CH:15][CH:14]=2)=[CH:9][CH:8]=1)[CH2:2][CH2:3][CH2:4][CH2:5][CH3:6].C(O)CO[CH2:24][CH2:25][OH:26].[OH-:28].[Na+].Cl>O>[CH2:1]([C:7]1[CH:12]=[CH:11][C:10]([C:13]2[CH:18]=[CH:17][C:24]([C:25]([OH:26])=[O:28])=[CH:15][CH:14]=2)=[CH:9][CH:8]=1)[CH2:2][CH2:3][CH2:4][CH2:5][CH3:6]

Komponenten

6

Edukt 4

HCID 313Hydrochloric AcidHCID 8117Diethylene GlycolHCID 14798Sodium HydroxideHCID 38764(1,1'-Biphenyl)-4-carbonitrile, 4'-hexyl-

Produkt 1

HCID 135545884'-Hexyl[1,1'-biphenyl]-4-carboxylic acid

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 962WaterLösungsmittel

Versuchsvorschrift

5 Gram of 4-n-hexyl-4'-cyanobiphenyl, 40 ml of diethylene glycol, 4 ml of water and 2 g of sodium hydroxide were introduced into 200 ml three neck flask and heated with stirring for 25 hours, followed by acidifying with hydrochloric acid, separating by filtration and recrystallizing with glacial acetic acid to give 4.1 g of 4-n-hexyl-biphenyl-4'-carboxylic acid (II), which was a colorless crystal having a molecular formula of C19H22O2 (composition: C 80.8%, H 7.9%, O 11.3% as calculated values and C 80.4%, H 8.1%, O 11.5% as observed values) and a melting point of 170° -171° C and formed a smectic liquid crystal at temperatures exceeding the melting point.

Aufarbeitung

  1. temperatureheated
  2. customseparating by filtration
  3. customrecrystallizing with glacial acetic acid

Quellen und Nachweise

ORD-Eintrag
ord-baf99e0fdc284093a7109547019dea7d
Quelldatensatz
uspto-grants-1977_04
Patentnummer
US04017416

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