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Synthesis and Ring-Expanding Oligomerization of an Extremely Strained Macrocyclic Aromatic Ether−Sulfone

✍ Scribed by Colquhoun, Howard M.; Zhu, Zhixue; Williams, David J.

Book ID
126210741
Publisher
American Chemical Society
Year
2001
Tongue
English
Weight
81 KB
Volume
3
Category
Article
ISSN
1523-7060

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📜 SIMILAR VOLUMES

Oligo(ether-sulfones), 2. Synthesis of a
Oligo(ether-sulfones), 2. Synthesis of a novel macrocyclic aromatic ether sulfone bearing two carboxylic groups and the corresponding polyamide via direct condensation of the macrocycle with 4,4′-diaminodiphenylmethane
✍ Barbara Rodewald; Helmut Ritter 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 470 KB

## Abstract A new macrocyclic arylene ether sulfone bearing two carboxylic groups, 4, was prepared by use of pseudo high dilution techniques. In a first step, 4,4‐bis[4‐(4‐(4‐chlorophenylsulfonyl)phenoxy)phenyl]pentanoic acid (3) was prepared from bis(4‐chlorophenyl)sulfone (1) and an excess of 4,4