Pyromellitic Acid → Pyromellitic dianhydride

HRID 1164653

反応式

HRID 1164653 の反応式
[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]

参加物

3

反応物 1

HCID 6961Pyromellitic Acid

生成物 1

HCID 6966Pyromellitic dianhydride

試薬・触媒・溶媒 1

HCID 7519Anisole溶媒

実験手順

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.

後処理

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

出典と根拠

ORDレコード
ord-56da8f3a68484008b231c5bed601bd04
出典データセット
uspto-grants-1983_01
特許番号
US04370487

関連ノート

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