- ALKYLATED ALKOXYDIARYLAMINE ANTIOXIDANTS
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Alkylated diaryl amines further substituted by an alkoxy group on one or more aryl carbon atoms exhibit excellent antioxidant activity in lubricant compositions.
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Paragraph 0075-0076
(2018/04/13)
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- Copper-mediated N- and O-arylations with arylboronic acids in a continuous flow microreactor: a new avenue for efficient scalability
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A continuous flow procedure has been elaborated for the copper(II)-mediated N- and O-arylation of a range of compounds with arylboronic acids using a commercial microreactor setup. The compounds could be continuously generated in good yields paving the way for efficient scalability.
- Singh, Brajendra K.,Stevens, Christian V.,Acke, Davy R.J.,Parmar, Virinder S.,Van der Eycken, Erik V.
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scheme or table
p. 15 - 18
(2009/04/10)
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- Condensations of 1,4-Cyclohexanediones and Secondary Aromatic Amines. II. N-Phenylation of Diarylamines
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The condensations of 1,4-cyclohexanedione with several diphenylamines were investigated in order to determine the limit of the utility of this reaction for the N-phenylation of aromatic secondary amines. 4-Methoxy-, 4,4'-dimethyl-, and 4,4'-dibromodiphenylamines produced their N-phenylated compounds in fairly good yields, but 4-hydroxy-, 3-methoxy-, and 4,4'-bis(dimethylamino)diphenylamines produced poor yields.Nitro-substituted diphenylamines gave N-phenyl derivatives in low yields along with N-4-hydroxyphenyl derivatives.N,N'-Diphenyl-p-phenylenediamine and N,N'-diphenylbenzidine gave correspondig tetra-N-phenyl diamines in good yields.The condensation of N-phenyl-1-naphthylamine, N-phenyl-2-naphthylamine, di-2-pyridylamine, phenothiazine, and carbazole with 1,4-cyclohexanedione were also examined.
- Haga, Kazuo,Iwaya, Katsumasa,Kaneko, Ryohei
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p. 803 - 808
(2007/10/02)
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