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Synthesis of 1,3,5,2λ5-Triazaphosphinines by Intramolecular Cyclization of (N-Cyanophosphorimidoyl)guanidines and Diguanidinophosphonium Chlorides.

✍ Scribed by Nicolas Inguimbert; Lothar Jaeger; Marc Taillefer; Matthias Biedermann; Henri-Jean Cristau

Publisher
John Wiley and Sons
Year
2005
Weight
30 KB
Volume
36
Category
Article
ISSN
0931-7597

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✦ Synopsis

Abstract

For Abstract see ChemInform Abstract in Full Text.

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Synthesis of 1,3,5,2λ5-Triazaphosphinine
Synthesis of 1,3,5,2λ5-Triazaphosphinines by Intramolecular Cyclisation of (N-Cyanophosphorimidoyl)guanidines and Diguanidinophosphonium Chlorides
✍ Nicolas Inguimbert; Lothar Jäger; Marc Taillefer; Matthias Biedermann; Henri-Jea 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 170 KB

## Abstract The sodium phosphonium diylide Na[Ph~2~P(NCN)~2~] (3) − the first example of a stabilised phosphonium diylide − was synthesised by treatment of sodium diphenylphosphide with 2 equiv. of cyanic azide. Compound 3 reacted with alkyl‐ and arylammonium salts [RR′NH~2~]Cl {R = PhCH~2~, __t__B

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## N-Hydroxyiminoyl chlorides reacted with N-alkyl ethynesulfonamides in the presence of triethylamine in CH 2 Cl 2 to afford the 4-alkyl-3-aryl-4,5dihydro-1,5,2,4-oxathiadiazepine-5,5-diones (3) as the major products together with N-alkyl-3-aryl-5-isoxazolesulfonamides (4).