To develop a π-conjugation circuit switched by redox reaction between 3-pyridone and 3-hydroxypyridine, ring-contracted analogue of oxypyriporphyrin, 2-oxypyritriphyrin(1.2.1) was prepared. When 2-oxypyritriphyrin treated with NaBH4, not only the 3-oxypyridine unit, but also meso-carbon reduced. The reduced analog could be oxidized again to afford in reversible manner.

2,3-dihydroxy-2-methylbutyric acid, also known as 2,3-dimethylglyceric constitutes the acyl and/or alcoholic moiety of many bioactive natural esters. Herein, we describe a chemoenzymatic methodology which gives access to all four possible stereoisomers acid ethyl ester. The racemic ?-acetolactate, produced by N-heterocycle carbene (NHC)-catalyzed coupling pyruvate and methylacetoin was employed...

Reduction of nitrobenzene, 4-ethyl nitrobenzene, 4-isopropyl nitrobenzene, 4-nitro 1-phenyl acetate, acetophenone, with CuCl2/MeOH/NaBH4 provided hydrogenated products in quantitative yields. In order to evaluate the best catalytic systems various transition metal catalysts were examined for the first time and CuCl2 catalysts was superactive system. And a solvent system was also studied with me...

In this study, we analyzed the antimicrobial activities of poly-N-isopropylacrylamide (pNIPAM)-based polymeric nanoparticles encapsulating silver nanoparticles (AgNPs). Three sizes of AgNP-encapsulating pNIPAM- and pNIPAM-NH2-based polymeric nanoparticles were fabricated. Highly stable and uniformly distributed AgNPs were encapsulated within polymeric nanoparticles via in situ reduction of AgNO...

Nanomaterials, today, are an integral part of our everyday lives, industrial processes and appliances. Biosynthesis, because its environmental sustainability, is now becoming a hot topic. The biosynthesis nanomaterials using plant phytochemicals enhances the nanomaterial’s biocompatibility compatibility with environment too. Hence, forthe first time, this study uses Caralluma acutangula (CA) ex...