142596-52-9

Upstream product

• 186581-53-3 diazomethane 
• 5651-77-4 5-tert-butyl-2-nitrophenol 
• 22385-83-7 4-t-butyl-1,2-dinitrrobenzene 
• 124-41-4 sodium methylate 
• 74-88-4 methyl iodide 
• 585-34-2 3-tert-butylphenyol 

Downstream Products

• 228401-14-7 4-tert-butyl-2-methoxy-aniline 

Relevant academic research and scientific papers

Transetherification of 2,4-dimethoxynitrobenzene by aromatic nucleophilic substitution

In view of the few reports concerning aromatic nucleophilic substitution reactions featuring an alkoxy group as a leaving group, the aromatic nucleophilic substitution of 2,4-dimethoxy-nitrobenzene was investigated with a bulky t-butoxide nucleophile under microwave irradiation. The transetherification of 2,4-dimethoxynitrobenezene with sodium t-butoxide under specific conditions, namely for 20 min at 110C in 10% dimethoxyethane in toluene, afforded the desired product in 87% yield with exclusive ortho-selectivity. A variety of reaction conditions were screened to obtain the maximum yield. The aromatic nucleophilic substitution of 2,4-dimethoxynitrobenzene with t-butoxide should be carried out under controlled conditions in order to avoid the formation of byproducts, unlike that of dihalogenated activated ben-zenes. Among the formed byproducts, a major compound was elucidated as 2,4-dimethoxy-N-(5-methoxy-2-nitrophenyl)aniline by X-ray crystallography.

Oxidative fluorination of N-arylsulfonamides

We report a late stage oxidative nucleophilic fluorination of N-arylsulfonamides, a class of compounds so far not considered as precursors to 4-fluorophenyl sulfonamides. By installing a para-positioned tert-butyl substituent on the aniline, oxidative fluorination takes place regioselectively in the presence of HF·pyridine and PIDA. This methodology has been shown to give good yields for a variety of ortho- and meta-functionalised N-arylsulfonamides and has been adapted for radiofluorination to give 4-[18F]fluorophenyl sulfonamides under carrier added conditions.

Inhibition Of Raf Kinase Using Symmetrical And Unsymmetrical Substituted Diphenyl Ureas

This invention relates to the use of a group of aryl ureas in treating raf mediated diseases, and pharmaceutical compositions for use in such therapy.

INHIBITION OF p38 KINASE USING SYMMETRICAL AND UNSYMMETRICAL DIPHENYL UREAS

This invention relates to the use of a group of aryl ureas in treating cytokine mediated diseases and proteolytic enzyme mediated diseases, and pharmaceutical compositions for use in such therapy.

Inhibition of p38 kinase using symmetrical and unsymmetrical diphenyl ureas

This invention relates to the use of a group of aryl ureas in treating cytokine mediated diseases and proteolytic enzyme mediated diseases, and pharmaceutical compositions for use in such therapy.

Inhibition of raf kinase using symmetrical and unsymmetrical substituted diphenyl ureas

This invention relates to the use of a group of aryl ureas in treating raf mediated diseases, and pharmaceutical compositions for use in such therapy.

13C NMR Spectra of Substituted o-Nitroanisoles and n-Butyl o-Nitrophenyl Ethers

13C NMR analyses of substituted o-nitroanisoles and n-butyl o-nitrophenyl ethers are reported. Key Words: 13C NMR - o-Nitroanisoles - n-Butyl o-nitrophenyl ethers

Interaction between Electron Donor and Acceptor Groups in Some Trisubstituted Benzenes. Part 1. Relative Reactivities of 4-Substituted 1,2-Dinitrobenzenes towards Sodium Methoxide

In an effort to study the effects of 'through conjugation' on the properties of some 1,2,4-trisubstituted benzenes, the rates of reaction of a series of four 4-substituted 1,2-dinitrobenzenes with sodium methoxide in methanol have been studied.Although reactivities at the 2-position were qualitatively in the order to be expected from inductive effects, those at the 1-position were highly sensitive to the influence of mesomeric donor action of the 4-substituent.Relatively large effects were seen for the 4-alkyl derivatives; and C-H hyperconjugation appeared to be stronger than C-C hyperconjugation.