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On the synthesis of functionalized cyclic and polymeric aryloxyphosphazenes from phenols

✍ Scribed by Gabino A. Carriedo; Lucia Ferńndez-Catuxo; Francisco J. García Alonso; Paloma Gómez Elipe; Pedro A. Gonźlez; Gema Śnchez

Book ID
102653888
Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
566 KB
Volume
59
Category
Article
ISSN
0021-8995

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✦ Synopsis

A very convenient synthetic method is described for the known cyclic aryloxyphosphazenes [N3P3(OC6H4-R)6] (R = Br, CN, CHO, COCH3, COC6H5, and NO,). The method is based on the direct reaction of [N3P3C16] with six equivalents of the para-substituted phenols HOC6H4-R and K&03 in refluxing acetone and is characterized by very short reaction times and very simple workups, leading directly to the analytically and spectroscopically pure products in very high yields. In the cases where R = H, But, or OCH3, the reactions were much slower, but the time could be shortened by using [Bu4N]Br as the phase-transfer catalyst. Similarly, the polymers [NP(OC6H4-R),], can be conveniently obtained in ca. 70% and good analytical purity from polydichlorophosphazene [NPCl,], and the parasubstituted phenols HOC6H4-R (R = Br, CN, COCH3, COC6H5, and NO2) in the presence of K2C03 using THF as the solvent.

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Improved synthesis of cyclic and polymer
Improved synthesis of cyclic and polymeric phosphazenes based on facile chlorine substitution with phenols promoted by cesium carbonate
✍ Gabino A. Carriedo; Francisco J. García Alonso; Pedro A. González 📂 Article 📅 1997 🏛 John Wiley and Sons 🌐 English ⚖ 387 KB

## Abstract In this report we describe a very convenient synthetic method for the preparation in high yields and purity of cyclic [N~3~P~3~(OCH~2~CF~3~)~6~] and [N~3~P~3~(OC~6~H~4~R)~6~] (R = Br, CN, CHO, COC~6~H~5~, COCH~3~, H, OCH~3~), and polymeric [NP(OC~6~H~4~R)~2~]~__n__~ (R = Br, CHO, COC~6~