16979-17-2

Upstream product

• 555-16-8 4-nitrobenzaldehdye 
• 94-09-7 p-aminoethylbenzoate 

Downstream Products

• 21191-40-2 4-{[(4-butyl-3,5-dioxo-1,2-diphenyl-pyrazolidin-4-yl)-(4-nitro-phenyl)-methyl]-amino}-benzoic acid ethyl ester 
• 55774-19-1 bis[1-(2,3-dimethyl-1-phenyl-3-pyrazolin-5-one)]-4-nitrophenylmethane 
• 94-09-7 p-aminoethylbenzoate 
• 555-16-8 4-nitrobenzaldehdye 

Relevant academic research and scientific papers

Liquid Crystal Formation in Binary Systems. XI. Effects of Branching of Ester Alkyl Group on the Induction of Liquid Crystals in the N,N,N',N'-Tetramethylbenzidine-Alkyl 4-(4-Nitrobenzylideneamino)benzoate Systems

Smectic A liquid crystals are induced in binary mixtures with normal alkyl esters as well as with esters of branched alkyl groups.

Reductive Amination Revisited: Reduction of Aldimines with Trichlorosilane Catalyzed by Dimethylformamide─Functional Group Tolerance, Scope, and Limitations

Aldimines, generated in situ from aliphatic, aromatic, and heteroaromatic aldehydes and aliphatic, aromatic, and heteroaromatic primary or secondary amines, can be reduced with trichlorosilane in the presence of dimethylformamide (DMF) as an organocatalys

Investigation of the substituent specific cross-interaction effects on 13C NMR of the C=N bridging group in substituted benzylidene anilines

The substituent effect on 13C NMR of the C=N in benzylidene anilines XPhCH=NPhY was investigated, in which the substituents X and Y are in p-position or in m-position of the two aromatic rings. The substituent effects including the inductive effects of X and Y, the conjugative effects of X and Y, and the substituent specific cross-interaction effect were put into one model to quantify the 13C NMR chemical shift δC(C=N) of the C=N in XPhCH=NPhY. A penta-parameter correlation equation with correlation coefficient 0.9975 and standard error 0.17 ppm was obtained for 80 samples of compounds. The result shows that the substituents X and Y have an opposite effect on the δC(C=N). The electron-withdrawing effects of X decrease the δC(C=N); while the electron-donating effects of X increase the δC(C=N). In contrast, the electron-withdrawing effects of Y increase the δC(C=N); while the electron-donating effects of Y decrease the δC(C=N). A new substituent specific cross-interaction effect parameter δσ2 was proposed, which indicates that the most substituent specific cross-interaction effect exists in the pair of max electron-withdrawing group (EWG) and max electron-donating group (EDG) or the pair of max EDG and max EWG. Further to verify the obtained correlation equation, 15 samples of model compounds were prepared and their δC(C=N) was measured in this work. The predicted δC(C=N) values with the obtained equation are in good agreement with the measured ones for these prepared compounds, which confirmed the reliability of the obtained equation.

Synthesis of 4-[(p-alkylanilino-p-alkylphenyl)methyl]-4-butyl-1,2- diphenylpyrazolidine-3,5-diones

4-Butyl-1,2-diphenylpyrazolidine-3,5-dione derivatives were prepared by its condensation with Schiff bases formed from p-aminobenzoic acid and its methyl and ethyl esters as amine components and substituted aromatic aldehydes. Pleiades Publishing, Inc., 2006.