1211-19-4Relevant articles and documents
A facile synthesis of (Z)-1, 6-disubstituted-7H-benzo[b][1,5]diazonin-7-one derivatives via arylation-allylation-RCM pathway of anthranilamide and isatoic anhydride
Novanna, Motakatla,Kannadasan, Sathananthan,Shanmugam, Ponnusamy
, (2019)
A facile and efficient method has been developed for the synthesis of (Z)-6-allyl-1-phenyl-1,2,5,6-tetrahydro-7H-benzo[b][1,5]diazonin-7-one and (Z)-1,6-diphenyl-1,2,5,6-tetrahydro-7H-benzo[b][1,5]diazonin-7-one from anthranilamide via N-arylation/N-allylation and from isatoic anhydride via ring opening/N-arylation/N-allylation followed by ring closing metathesis using Grubbs-II catalyst as a key step. Grubbs-II catalyst was found to be superior over Grubbs-I catalyst in terms of reaction time and yield of the product, and the routes developed were suitable to synthesize benzo fused nine membered nitrogen heterocycles. The requirement of diallylated substrates with protected amine and amide nitrogen is suitable for RCM has been established for the synthesis of diazoninone derivatives.
Unravelling the photophysics of triphenylamine and diphenylamine dyes: A comprehensive investigation with: Ortho -, meta - And para -amido substituted derivatives
Mandare, Narendra,Shanmugam, Ponnusamy,Sundararajan, Mahesh,Dutta Choudhury, Sharmistha
, p. 19061 - 19075 (2020)
The triphenylamine (TPA) and diphenylamine (DPA) derivatives constitute an important class of dyes that are suitable for many fluorescence-based applications. This study provides a thorough understanding about the photophysics of ortho-, meta- and para-am
Synthesis, biological screening, and molecular docking of quinazolinone and quinazolinethione as phosphodiesterase 7 inhibitors
Elfeky, Sherin M.,Sobahi, Tariq R.,Gineinah, Magdy M.,Ahmed, Nesreen S.
, (2019/11/16)
N-Substituted isatoic anhydrides were used as starting materials for the synthesis of compounds 5–16 through alkali hydrolysis, Schiff base reactions, and oxidation. Compounds 18–23 were obtained by thionation of their oxo isosteres using Lawesson's reage
Synthesis of blue-red emissive amido-substituted di(het)aryl and tri(het)aryl amine derivatives via chemoselective N-mono and N,N-diarylation of (het) aryl amino amides using benzyne/arynes
Meerakrishna, Ramakrishnan Suseela,Shanmugam, Ponnusamy
, p. 2550 - 2558 (2019/02/14)
Herein, via chemoselective N-mono and N,N-diarylation of an aryl/hetaryl amino amide reaction using benzyne or arynes, an amide-substituted triaryl amine derivative and diaryl amine derivatives were afforded. The scope and limitation of the present study have been studied. The products thus obtained were synthetically transformed to highly functionalized biphenyl bridged heterocycles via Suzuki coupling and condensation with 4,4′-biphenyl dialdehyde. Evaluation of the photophysical properties has revealed that the triaryl amine derivatives are blue emissive with high quantum yields, whereas the heterocyclic triaryl amine derivatives are blue-red emissive. The benzofuran-derived compound 4i was found to be blue emissive with high quantum yield, whereas the pyridine-derived compound 5j was found to be red emissive with low quantum yield.