21086-81-7

Upstream product

• 583-63-1 ortoquinone 
• 62-53-3 aniline 
• 2435-54-3 o-bromanil 
• 106-51-4 p-benzoquinone 
• 88-75-5 2-hydroxynitrobenzene 
• 452-86-8 4-methyl-1,2-dihydroxybenzene 
• 21086-74-8 4-phenylamino-5-methoxy-1,2-benzoquinone 
• 64-17-5 ethanol 
• 10028-15-6 ozone 
• 64-19-7 acetic acid 
• 89-57-6 5-Aminosalicylic Acid 
• 102754-67-6 2-amino-5-anilino-[1,4]benzoquinone-bis-phenylimine 
• 21086-65-7 4,5-dimethoxy-1,2-benzoquinone 
• 14208-17-4 o-Benzochinon-dioxim 

Downstream Products

• 4435-12-5 azophenin 
• 124251-44-1 5-anilino-2-hydroxy-1,4-benzoquinone 
• 58059-12-4 2-phenylamino-5-phenyl-3-phenazinone 

Relevant academic research and scientific papers

Reactions of N-aryl-1,4-benzoquinonemonoimines with 2,5-bis(arylamino)-N-aryl-1,4-benzoquinonemonoimines

2,5-Bis(arylamino)-N-aryl-1,4-benzoquinonemonoimines react with N-aryl-1,4-benzoquinonemonoimines and 4-(arylamino)phenols to give 9-aryl-3,6-bis(arylamino)-4-arylimino-1,4-dihydrocarbazol-1-ones and 2,8-bis(arylamino)-1-arylimino-1,4-dihydrodibenzofuran-4-ones, respectively.

MODEL STUDIES FOR INSECT PROTEIN SCLEROTIZATION: OXIDATIVE LOSS OF THE SIDE CHAIN FROM 4-SUBSTITUTED CATECHOLS

The oxidation of several 4-substituted catechols in aqueous solution, pH7 in the presence of aniline results in the formation of 4,5-dianilino-1,2-benzoquinone 2 and the anil of 2 (3).The C-4 substituent is efficiently cleaved and mechanisms are proposed to account for this phenomenon based on HPLC and GC studies and the formation of N-methylaniline when these reactions were performed in the presence of sodium cyanoborohydride.The evidence suggests that the initial step involves the addition of aniline to the catechol C-4 side chain.

Addition of Aliphatic and Aromatic Amines to Catechol in Aqueous Solution Under Oxidizing Conditions

The oxidation of catechol in the presence of two aliphatic and aromatic amines has been investigated.In aqueous solutions of pH 7.0 and 11.7, the substitution pattern of the adduct was dependent on the type of amine used.Aromatic amines produced 4,5-disub

Reactions of Biogenic Amines with Quinones

Reactions of benzo-1,4-quinone with 2-phenylethylamine and p-tyramine produced the novel 2,5-diamino-derivatives (2b,c), analogous to 2,5-dianilinobenzo-1,4-quinone (2a). 2,5-Dihydroxybenzo-1,4-quinone (3) reacts with aniline to form the tetrol (4a) and not 2,5-dianilinobenzo-1,4-quinone (2a) as previously reported.This tetrol (4a) may hydrolyse to form the monoimine (5a).Only in boiling aniline was the 2,5-dianilino derivative (2a) produced from the tetrol (4a).Novel tetrols were similarly isolated from 2-phenylethylamine, p-tyramine and histamine.Benzo-1,2-quinone reactions with aniline and the above amines were also studied.Implications of these reactions for the extraction of amines from food are discussed.

THERMAL AND PHOTOCHEMICAL DECOMPOSITION OF 3- AND 4-AZIDOPYRIDINE 1-OXIDES IN NUCLEOPHILIC SOLVENTS

The thermolysis and photolysis of the title compounds in aniline, N-methylaniline, N,N-dimethylaniline, morpholine and dioxane containing methoxide ion in methanol afforded complex mixtures from which only major products were isolated.No ring-expansion products were detected.In aniline, many of its known oxidation products were found, the N-oxide acting as an oxidizing agent.Hydrogen-abstraction products were the main ones formed from pyridine 1-oxides.

RESEARCH IN THE CHEMISTRY OF HETEROCYCLIC QUINONEIMINES. 3.* OXIDATIVE CYCLIZATION OF 2,5-DIARYLAMINO-SUBSTITUTED 1,4-BENZOQUINONE-4-PHENYLIMINES - SIMPLE METHOD FOR THE PREPARATION OF 2-ARYLAMINO-5-ARYL-PHENAZONINES

2,5-Diarylamino-1,4-benzoquinone-4-phenylimines, which are formed in the reaction of 1,4-benzoquinone-4-phenylimine with aromatic amines, are converted under oxidative conditions to products of intramolecular oxidative cyclization, viz., 2-arylamino-5-aryl-3-phenazinones.