Isobutanol → Quinacridone

HRID 1970749Notes

Reaction equation

HRID 1970749 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.C(O)C(C)C>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

4

Reactant 2

HCID 6560IsobutanolHCID 704235,12-Dihydro-2,9-dimethylquino(2,3-b)acridine-7,14-dione

Product 1

HCID 13976Quinacridone

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
130 °C

Procedure

A mixture of 70 weight parts of “Fastogen Super Magenta RTS (produced by Dainippon Ink Chemical Co., Ltd.)”, (C.I. Pigment Red 122), 290 weight parts of isobutanol and 380 weight parts of water was stirred at 130° C. for 7 hours in a reaction vessel with a stirrer. Thereafter, the resulting mixture was cooled to room temperature, and the resulting precipitates were filtered off, washed with hot water, dried and pulverized. Thus, quinacridone pigment was obtained. This quinacridone pigment was designated as Quinacridone Pigment 13. The number average primary particle size, the major axis direction length, the minor axis direction length and the ratio of the major axis direction length to the minor axis direction length of Quinacridone Pigment 13 are as shown in Table 1.

Workup

  1. temperatureThereafter, the resulting mixture was cooled to room temperature
  2. customthe resulting precipitates
  3. filtrationwere filtered off
  4. washwashed with hot water
  5. customdried

Sources & evidence

ORD record
ord-f8db8cdad9a04a3e852d9bec8f5b39ba
Source dataset
uspto-grants-2013_04
Patent number
US08431295B2

Reaction notes

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