Methanesulfonic Acid → Quinacridone

HRID 1712853Notes

Reaction equation

HRID 1712853 reaction equation
C[C:2]1[CH:7]=[CH:6][C:5]2[NH:8][C:9]3[C:14]([C:15](=[O:16])[C:4]=2[CH:3]=1)=[CH:13][C:12]1[NH:17][C:18]2[CH:25]=[CH:24][C:23](C)=[CH:22][C:19]=2[C:20](=[O:21])[C:11]=1[CH:10]=3.CS(O)(=O)=O>>[CH:23]1[CH:22]=[C:19]2[C:20]([C:11]3[C:12]([NH:17][C:18]2=[CH:25][CH:24]=1)=[CH:13][C:14]1[C:15]([C:4]2[C:5]([NH:8][C:9]=1[CH:10]=3)=[CH:6][CH:7]=[CH:2][CH:3]=2)=[O:16])=[O:21]

Participants

3

Reactant 2

HCID 6395Methanesulfonic AcidHCID 704235,12-Dihydro-2,9-dimethylquino(2,3-b)acridine-7,14-dione3×

Product 1

HCID 13976Quinacridone

Conditions

Temperature
80 °C

Procedure

In the present example, 2,9-dimethylquinacridone is used as a pigment. A total of 10 parts by weight of 2,9-dimethylquinacridone is placed in a pear-shaped flask with a capacity of 300 mL, and 80 parts by weight of methanesulfonic acid is added thereto under normal temperature. The pear-shaped flask is immersed in oil bath heated to 80° C., and heating and stirring are performed for 10 min under an argon gas atmosphere. The 2,9-dimethylquinacridone is dissolved and a quinacridone pigment solution of a blue-violet color is prepared.

Workup

  1. additionis added
  2. customThe pear-shaped flask is immersed in oil bath
  3. temperatureheating

Sources & evidence

ORD record
ord-ffb16d322c754179a8df20d1ec30ebc0
Source dataset
uspto-grants-2010_09
Patent number
US07794536B2

Reaction notes

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