Pyromellitic Acid → Pyromellitic dianhydride

HRID 1164653

반응식

HRID 1164653 반응식
[C:1]([OH:18])(=[O:17])[C:2]1[C:3](=[CH:7][C:8](=[C:12]([CH:16]=1)[C:13]([OH:15])=[O:14])[C:9]([OH:11])=O)[C:4]([OH:6])=O>C1(OC)C=CC=CC=1>[CH:16]1[C:12]2[C:13]([O:14][C:9](=[O:11])[C:8]=2[CH:7]=[C:3]2[C:4]([O:18][C:1](=[O:17])[C:2]=12)=[O:6])=[O:15]

참가 물질

3

반응물 1

HCID 6961Pyromellitic Acid

생성물 1

HCID 6966Pyromellitic dianhydride

시약·촉매·용매 1

HCID 7519Anisole용매

실험 절차

50.0 g pyromellitic acid were boiled under reflux with 400 ml anisole and 3.0 g activated carbon, Merck Art. No. 2184, under the same conditions as in example 1 and then processed. 4.3 g (60.6% of the theory) water separated in the course of 2.5 hours. 27.3 g (=64% of the theory) pyromellitic acid anhydride were obtained and the remainder of 18.0 g, (36%) was filtered off as unchanged pyromellitic acid, together with the activated carbon.

후처리

  1. custom4.3 g (60.6% of the theory) water separated in the course of 2.5 hours

출처 및 근거

ORD 기록
ord-56da8f3a68484008b231c5bed601bd04
출처 데이터셋
uspto-grants-1983_01
특허 번호
US04370487

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