2011-53-2

Upstream product

• 16278-29-8 3-nitrobenzenediazonium 
• 108-95-2 phenol 
• 17440-81-2 triethylammonium 
• 99-09-2 3-nitro-aniline 
• 67-64-1 acetone 
• 90886-72-9 3-Nitro-benzol-<1 azo 2>-malondialdehyd 
• 2028-76-4 3-nitrophenyldiazonium chloride 
• 62-53-3 aniline 
• 730-23-4 4-(3-nitro-phenylazo)-aniline 

Downstream Products

• 38501-88-1 1-(3-formyl-4-hydroxyphenylazo)-3-nitrobenzene 
• 17440-81-2 triethylammonium 
• 77350-56-2 4-(3'-nitrophenylazo)-anisole 

Relevant academic research and scientific papers

Synthesis of a nitrite functionalized star-like poly ionic compound as a highly efficient nitrosonium source and catalyst for the diazotization of anilines and subsequent facile synthesis of azo dyes under solvent-free conditions

Nitrite functionalized star-like poly ionic (NFSPI) compound was synthesized and used as a highly efficient nitrosonium source and catalyst for the conversion of aniline derivatives to diazonium salts. Azo dyes were prepared via in situ azo-coupling reaction of these diazoniums with active aromatic compounds under solvent-free conditions in very short reaction time in excellent yields. NFSPI plays dual role as a three-dimensional nitrosonium source and catalyst because of its poly ionic characteristic. The isolated products were confirmed with FT-IR spectrum, 1H-NMR, 13C-NMR spectroscopy and CHNSO analysis. The structure of heterogeneous reagent and catalyst was confirmed by FT-IR spectrum, SEM images, EDX and CHNSO analysis. Yields and reaction times for the synthesis of a variety of products via this procedure were compared with reported values in literature.

Antifungal agents

The present invention provides azo and stilbene compounds having the structure: wherein XY is N=N, CH=CH, (C=O)-NH or NH-(C=O); wherein Z is CR6 or N; wherein R1, R2 and R5 are independently hydrogen, halogen, NO2 or CF3; wherein R3 is hydrogen, halogen, CF3, aryl or heteroaryl, NO2 or OCF3; wherein R4 is hydrogen, halogen, CF3, aryl or heteroaryl, NO2 or linear or branched chain alkoxy; wherein R6 is hydrogen or linear or branched alkyl; wherein R7 is hydrogen, cyano, hydroxyalkyl, carboxyl, halogen, hydroxyl, formyl, NO2 or halogen; and wherein R8 is hydroxyl or substituted or unsubstituted amino; and wherein R9 and R10 are independently hydrogen, CN or hydroxyalkyl. Said compounds are useful as antifungal therapeutics, fungicides and fungistats. The present invention also provides methods of inhibiting fungal RNA transcription and treating fungal infections in human and animal subjects and fungal infestations in plants.

A Simple Route for the Synthesis of Chlorosubstituted Arylazobenzenes, Arylazonaphtalenes, and Arylazopyrazoles

The reaction of arylazophenoles and arylazohydroxypyrazoles (or their tautomer hydrazones) 10, 11, and 15 with POCl3 in dimethylformamide yields chlorosubstituted arylazobenzenes or arylazopyrazoles 12, 13 and 16, resp., in moderate to high yields.The substitution of the OH-group by the Cl-moiety is favoured by acceptor substituents in the aryl fragments ortho- and/or para-linked to the azo group.In case that arylazocompounds derived from resorcinol are used the substitution reaction runs in a stepwise manner giving raise to the formation of o-hydroxy-p-chlorosubstit uted azo compounds 18 primarily and then of dichlorosubstituted azo compounds 19.

BASIC PROPERTIES OF 4-ARYLAZO-PHENOLS AND 4-ARYLAZO-ANISOLES

The conditions in which 4-arylazo-phenols and 4-arylazo-anisoles have basic properties have been studied.We have also determined the equilibrium constants of the reactions between 4-arylazo-phenols or 4-arylazo-anisoles with perchloric acid in nitromethane, acetonitrile and acetic acid.Conclusions have been drawn from the influence of the nature of solvent and substituent at the benzene ring on equilibrium constant values.