83374-91-8

Upstream product

• 591-50-4 iodobenzene 
• 60-09-3 4-Aminoazobenzene 
• 17082-12-1 trans-azobenzene 
• 62-53-3 aniline 

Downstream Products

• 315666-77-4 (E)-N,N-diphenyl-4-(phenyldiazenyl)aniline 
• 101-54-2 N-phenylphenylene-1,4-diamine 

Relevant academic research and scientific papers

S NH Arylamination of 3-Nitropyridine: A Competitive Formation of 2-Arylamino-5-nitropyridines and 2-Arylamino-5-nitrosopyridines

Arylamination of 3-nitropyridine via the nucleophilic substitution of hydrogen leads to a mixture of 2-arylamino-5-nitropyridines and novel 2-arylamino-5-nitrosopyridines, with the latter as the major product. The proposed mechanism includes the formation of σ H -adducts and their further aromatization proceeding either through an oxidative pathway or intramolecular Red/Ox pathway of the S NH reaction. Moreover, we have shown that nitroso compounds can be selectively oxidized with m -chloroperbenzoic acid to give the corresponding nitro derivatives or their N -oxides, depending on the reaction temperature and the amount of oxidant.

Azo compounds reducing formation and toxicity of amyloid beta aggregation intermediates

The present invention relates to compounds suitable as modulators of protein misfolding and/or protein aggregation. The compounds are particularly suitable as inhibitors of amyloid aggregate formation and/or modulators of amyloid surface properties, and/or as activators of degradation or reduction of amyloid aggregates.

Survey of Enhanced, Thermally Stable, and Soluble Second-Order Nonlinear Optical Azo Chromophores

A series of mono- and bisazo dyes were synthesized to obtain soluble, thermally stable, and enhanced second-order nonlinear optical chromophores (NLOphores). To prepare good sol-gel films, the most important factor was the solubility of NLOphores. Those azo NLOphores showing sufficient solubility were further classified into three groups: non-nitro-containing, nitro-containing, and fluorine-containing derivatives. Though non-nitro-containing NLOphores showed high solubility, their second-order nonlinearity was low. Nitro-containing NLOphores showed a rather high Td and a medium nonlinearity. Fluorine-containing NLOphores, especially perfluoroalkylsulfonyl derivatives, showed high nonlinearity and a rather low Td.

Electronic spectra of push-pull 4-phenylaminoazobenzene derivatives

A series of push-pull type 4-phenylaminoazobenzene derivatives bearing an electron-withdrawing 4'-substituent were probed by electronic spectra in solution. The visible absorption maxima of these azobenzenes were correlated with the solvent parameters through the McRae theory as well as the solvent donor numbers. While the absorption spectra of these neutral species were solvent-dependent, those of protonated species were almost solvent independent. On the other hand, the absorption maxima and the rates of thermal cis-to-trans isomerization in a given solvent were correlated with Hammett constants. These results are discussed with the help of semi- empirical molecular-orbital calculations and compared with previously published data on related compounds.

Process for preparing substituted aromatic azo compounds

A process for preparing substituted aromatic azo compounds is provided which comprises contacting a nucleophilic compound and an azo containing compound in the presence of a suitable solvent system, and reacting the nucleophilic compound and the azo containing compound in the presence of a suitable base and a controlled amount of protic material at a temperature of about 10° C. to about 150° C. in a confined reaction zone wherein the molar ratio of protic material to base is 0:1 to about 5:1.

Process for preparing substituted aromatic amines

A process for preparing substituted aromatic amines is provided which comprises contacting a nucleophilic compound and an azo containing compound in the presence of a suitable solvent system, reacting the nucleophilic compound and the azo containing compound in the presence of a suitable base and a controlled amount of protic material at a temperature of about 10° C. to about 150° C. in a confined reaction zone wherein the molar ratio of protic material to base is 0:1 to about 5:1 and reducing the product of the reaction of the nucleophilic compound and the azo containing compound under conditions which produce the substituted aromatic amine. In another embodiment, the substituted aromatic amines of the invention are reductively alkylated to produce alkylated diamines or substituted derivatives thereof. In another embodiment, a process for preparing alkylated aromatic amines or substituted derivatives thereof is provided which comprises contacting a nucleophilic compound and an azo containing compound in the presence of a suitable solvent system, reacting the nucleophilic compound and the azo containing compound in the presence of a suitable base and a controlled amount of protic material at a temperature of about 10° C. to about 150° C. in a confined reaction zone wherein the molar ratio of protic material to base is 0:1 to about 5:1, and reductively alkylating the product of the reaction of nucleophilic compound and the azo containing compound under conditions which produce the alkylated aromatic amine or substituted derivative thereof.

Process for preparing substituted aromatic amines

A process for preparing substituted aromatic amines is provided which comprises contacting a substituted aromatic azo compound and an alcohol selected from the group consisting of aliphatic alcohols, cycloaliphatic alcohols, arylalkyl alcohols and mixtures thereof in the presence of a suitable base at a temperature of about 70° C. to about 200° C. In another embodiment, the substituted aromatic amines of the invention are reductively alkylated to produce alkylated diamines or substituted derivatives thereof.

Evaporator system comprising a stabilized pesticidal phosphoric acid ester and method for stabilizing such ester enclosed in an evaporator

An evaporator system adapted for emitting insect killing vapors of an insecticide therefrom and comprising a liquid or solid composition enclosed therein, said insecticide consisting in at least one volatile phosphoric acid ester which is stabilized by at least one diazene compound.