A MACROCYCLIC AROMATIC THIOETHER KETONE - SYNTHESIS, STRUCTURE AND ANIONIC RING-OPENING POLYMERIZATION

Authors
COLQUHOUN HM LEWIS DF FAIRMAN RA BAXTER I WILLIAMS DJ
Citation
Hm. Colquhoun et al., A MACROCYCLIC AROMATIC THIOETHER KETONE - SYNTHESIS, STRUCTURE AND ANIONIC RING-OPENING POLYMERIZATION, Journal of materials chemistry, 7(1), 1997, pp. 1-3
Citations number
12
Categorie Soggetti
Chemistry Physical","Material Science
Journal title
Journal of materials chemistry → ACNP
ISSN journal
09599428
Volume
7
Issue
1
Year of publication
1997
Pages
1 - 3
Database
ISI
SICI code
0959-9428(1997)7:1<1:AMATK->2.0.ZU;2-1
Abstract
Nucleophilic polycondensation at high concentration between benzene-1, 3-dithiol and 4,4'-difluorobenzophenone affords not only linear polyme r 1 but also a significant yield (ca. 8%) of cyclic oligomers, mainly the [2+2] cyclodimer 2. Under high-dilution conditions 2 becomes by fa r the major reaction product. Macrocycle 2 has been isolated, structur ally characterised by single-crystal X-ray methods and found to underg o rapid anionic ring-opening polymerisation in the melt (330-360 degre es C), affording a linear, high molecular weight poly(arylthioether ke tone).