Triphenylphosphine → HCID 178526641, compound

HRID 1502523Notes

Reaction equation

HRID 1502523 reaction equation
[N+:1]([C:4]1[CH:11]=[CH:10][C:7]([CH2:8]Br)=[CH:6][CH:5]=1)([O-:3])=[O:2].[C:12]1([P:18]([C:25]2[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=2)[C:19]2[CH:24]=[CH:23][CH:22]=[CH:21][CH:20]=2)[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1>O1CCCC1>[N+:1]([C:4]1[CH:11]=[CH:10][C:7]([CH2:8][PH:18]([C:19]2[CH:20]=[CH:21][CH:22]=[CH:23][CH:24]=2)([C:25]2[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=2)[C:12]2[CH:13]=[CH:14][CH:15]=[CH:16][CH:17]=2)=[CH:6][CH:5]=1)([O-:3])=[O:2]

Participants

4

Reactant 2

HCID 11776TriphenylphosphineHCID 660114-Nitrobenzyl bromide

Product 1

HCID 178526641HCID 178526641, compoundYield 44.9%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Conditions

Temperature
75 °C

Procedure

In an embodiment of the invention, a method for preparing the aforesaid alignment film in a laboratory level is illustrated as an example. 10 g of 4-nitrobenzyl bromide is mixed with 12 g of triphenylphosphine and dissolved in 150 ml of a dry tetrahydrofuran solution, heated to 75° C. and agitated under reflux for 48 hours, to obtain 8.2 g of a dry white p-nitrobenzyl triphenylphosphine. The p-nitrobenzyl triphenylphosphine is mixed with 2.6 g of p-nitrobenzaldehyde in a 150 ml tetrahydrofuran solution, and agitated under room temperature for about 24 hours to obtain 4.2 g of p-nitrostilbene. The resultant p-nitrostilbene is mixed with 14.7 g of tin dichloride, dissolved in a mixed solution of 30 ml/40% hydrochloride acid and 100 ml acetone, agitated under the room temperature for about 2 hours and refluxed for 8 hours to obtain p-aminostilbene. The p-aminostilbene is mixed with 9,9′-bianthracyl tetracarboxylic dianhydride in a dry NMP (N-methyl-pyrrolidone) solution under agitation for 24 hours, under protection of nitrogen gas, to obtain the precursor of the polyimide alignment film involved in the embodiment. The precursor is heated to 230° C. to obtain the final alignment film, which is a light sensitive alignment film.

Workup

  1. customIn an embodiment of the invention, a method for preparing the aforesaid alignment film in a laboratory level
  2. temperatureunder reflux for 48 hours

Sources & evidence

ORD record
ord-df1959eb1561474893b4fdce870d16cb
Source dataset
uspto-grants-2015_12
Patent number
US09207497B2

Reaction notes

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