145279-04-5Relevant articles and documents
A mild procedure for the preparation of o-nitrophenols by nitro urea or ammonium nitrate in the presence of silica sulfuric acid (SiO 2-OSO3H)
Ghorbani-Choghamarani, Arash,Nikoorazm, Mohsen,Goudarziafshar, Hamid,Naserifar, Zahra,Zamani, Parisa
, p. 731 - 734 (2011)
A mixture of ammonium nitrate or nitro urea and silica sulfuric acid was found to be efficient and environmentally friendly nitrating media for the preparation of orto-nitro phenols in dichloromethane at room temperature. A mixture of ammonium nitrate or nitro urea and silica sulfuric acid was found to be efficient and environmentally friendly nitrating media for the preparation of orto-nitro phenols in dichloromethane at room temperature.
Mononitration of phenol derivatives by guanidinium nitrate and silica sulfuric acid under mild conditions
Ghorbani-Choghamarani, Arash,Goudarziafshar, Hamid,Nikoorazm, Mohsen,Naseri, Zahra
experimental part, p. 1431 - 1434 (2012/06/01)
A mixture of guanidinium nitrate and silica sulfuric acid acts as mild and heterogeneous media for the efficient mono nitration of phenolic compounds in dichloromethane at room temperature.
PROCESS FOR PRODUCING NITROPHENOL DERIVATIVE
-
Page/Page column 11, (2008/06/13)
PROBLEM TO BE SOLVED: To provide a method for producing 2-nitrophenol derivative in which the 4-position is substituted with an alkoxy, aralkyloxy, aryloxy or heterocycloxy group by a simple method in a good yield applicable to mass production. SOLUTION: The method for producing the nitrophenol derivative represented by structural formula (B) (wherein R1 is an alkyl, aralkyl, aryl or heterocyclic group; R2 is a substituent; and n is an integer of 0-3, and when n is 2 or 3, a plurality of R2 may be the same or different, and when n is ≥1, R1 and R2 or a plurality of R2s may be linked with each other to form a ring) comprises reacting a phenol derivative represented by structural formula (A) (wherein R1, R2, and n are the same as defined above) with nitric acid in a solvent having a relative dielectric constant of ≤10. COPYRIGHT: (C)2006,JPOandNCIPI