2,5-Dianilinoterephthalic acid → Quinacridone

HRID 1291945Notes

Reaction equation

HRID 1291945 reaction equation
[NH:1]([C:8]1[CH:16]=[C:15]([C:17](O)=[O:18])[C:14]([NH:20][C:21]2[CH:26]=[CH:25][CH:24]=[CH:23][CH:22]=2)=[CH:13][C:9]=1[C:10](O)=[O:11])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.S(N(C1C=C(C(O)=O)C(N(S(=O)(=O)N)C2C=CC=CC=2)=CC=1C(O)=O)C1C=CC=CC=1)(=O)(=O)N>>[CH:24]1[CH:25]=[C:26]2[C:17]([C:15]3[C:14]([NH:20][C:21]2=[CH:22][CH:23]=1)=[CH:13][C:9]1[C:10]([C:7]2[C:2]([NH:1][C:8]=1[CH:16]=3)=[CH:3][CH:4]=[CH:5][CH:6]=2)=[O:11])=[O:18]

Participants

3

Reactant 2

HCID 823512,5-Dianilinoterephthalic acidHCID 18377742HCID 18377742, compound

Product 1

HCID 13976Quinacridone

Procedure

Pigmentary quinacridone was prepared exactly as described in comparison Example 2 except that 10% by weight, relative to the 2,5-dianilinoterephthalic acid, of 2,5-di(sulfamoylanilino)terephthalic acid (6 g) was included in the ring-closure reaction. Quinacridone (50.2 g) was obtained as a violet pigment.

Workup

  1. customPigmentary quinacridone was prepared exactly
  2. customwas included in the ring-closure reaction

Sources & evidence

ORD record
ord-c0f7930393c3492e8ce4258cb7a82421
Source dataset
uspto-grants-1998_05
Patent number
US05755873

Reaction notes

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