Isobutanol → Quinacridone

HRID 1970748Notes

Reaction equation

HRID 1970748 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 “CROMOPHTAL Jet Magenta DMQ (produced by Ciba Japan Co., Ltd.)”, (C.I. Pigment Red 122), 290 weight parts of isobutanol and 380 weight parts of water was placed into a reaction vessel with a stirrer and stirred at 130° C. for 7 hours. Thereafter, the resulting mixture was cooled to room temperature, and the resulting precipitates were filtered off, washed with hot water, dried and pulverized to obtain a quinacridone pigment. This quinacridone pigment was designated as Quinacridone Pigment 6. The number average primary particle size, major axis direction length, minor axis direction length and a ratio of a major axis direction length to minor axis direction length of Quinacridone Pigment 6 are as shown in Table 1.

Workup

  1. customwas placed into a reaction vessel with a stirrer
  2. temperatureThereafter, the resulting mixture was cooled to room temperature
  3. customthe resulting precipitates
  4. filtrationwere filtered off
  5. washwashed with hot water
  6. customdried

Sources & evidence

ORD record
ord-bcb46bdb74cb453d81d6c3c8b3e7d41b
Source dataset
uspto-grants-2013_04
Patent number
US08431295B2

Reaction notes

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