Pentanitrodiphenyl ether

PENTAMTRODIPHENYL ETHER Two isomers of pentanitrodiphenyl ether are known  

Isomer I (2,4,6,2 ,4 -, m. p. 210°C was obtained by Desvergnes [6] by reacting picryl chloride with sodium o- nitrophenate, followed by the nitration  

An attempt to introduce one more nitro group so as to obtain symmetric picryl oxide failed, since under the necessary vigorous nitration conditions decomposition of the product took place. 

According to Okon [9], compound I may be obtained by the nitration of 2,4,6-trinitrodiphenyl ether (III), which in turn is formed by the action of phenol on picryl-pyridinium chloride (p. 464)  

Isomer (II) 2,4,6,3 ,4 -pentanitrodiphcnyl ether (m. p. 200°C) is usually prepared by a Westfalisch-Anhaltische Sprengstoffe A. G. method [10], based on the reactions  

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The harsh conditions needed to introduce five or more nitro groups into diphenyl ether lead to the destruction of the aromatic ring. Highly nitrated derivatives of diphenyl ether can be prepared by an indirect route 2,2, 4,4, 6-pentanitrodiphenyl ether (92) is the product from the controlled nitration of (91), which is obtained from the reaction of picryl chloride (87) with sodium o-nitrophenolate. ... 

Polynitro derivatives of diphcnvl ether Pentanitrodiphenyl ether Hcxanitrodiphcnyl ether Nilro derivatives of various phenolic ethers Hexanitro diphenyl sulphide Hexaniirodiphcnyl sulphone Literature... 

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