305-85-1Relevant articles and documents
2,6-diiodo-4-nitrophenol, 2,6-diiodo-4-nitrophenyl acetate and 2,6-diiodo-4-nitroanisole: Interplay of hydrogen bonds, iodo-nitro interactions and aromatic π-π-stacking interactions to give supramolecular structures in one, two and three dimensions
Garden, Simon J.,Da Cunha, Fernanda R.,Wardell, James L.,Skakle, Janet M.S.,Low, John N.,Glidewell, Christopher
, p. o463-o466 (2002)
In 2,6-diiodo-4-nitrophenol, C6H3I2NO3, the molecules are linked, by an O-H...O hydrogen bond and two iodo-nitro interactions, into sheets, which are further linked into a three-dimensional framework by aromatic π-π-stacking interactions. The molecules of 2,6-diiodo-4-nitrophenyl acetate, C8H5I2NO4, lie across a mirror plane in space group Pnma, with the acetyl group on the mirror, and they are linked by a single iodo-nitro interaction to form isolated sheets. The molecules of 2,6-diiodo-4-nitroanisole, C7H5I2NO3, are linked into isolated chains by a single two-centre iodo-nitro interaction.
Molecularly Imprinted Synthetic Glucosidase for the Hydrolysis of Cellulose in Aqueous and Nonaqueous Solutions
Li, Xiaowei,Zangiabadi, Milad,Zhao, Yan
supporting information, p. 5172 - 5181 (2021/05/04)
Molecular imprinting is a powerful and yet simple method to create multifunctional binding sites within a cross-linked polymer network. We report a new class of synthetic glucosidase prepared through molecular imprinting and postfunctionalization of cross-linked surfactant micelles. These catalysts are protein-sized water-soluble nanoparticles that can be modified in multiple ways. As their natural counterparts, they bind a glucose-containing oligo- or polysaccharide. They contain acidic groups near the glycosidic bond to be cleaved, with the number and distance of the acid groups tuned systematically. Hydrolysis of cellulose in a key step in biomass conversion but is hampered by the incalcitrance of the highly crystalline cellulose fibers. The synthetic glucosidases are shown to hydrolyze cellobiose and cellulose under a variety of conditions. The best catalyst, with a biomimetic double acid catalytic motif, can hydrolyze cellulose with one-fifth of the activity of commercial cellulases in aqueous buffer. As a highly cross-linked polymeric nanoparticle, the synthetic catalyst is stable at elevated temperatures in both aqueous and nonaqueous solvents. In a polar aprotic solvent/ionic liquid mixture, it hydrolyzes cellulose several times faster than commercial cellulases in aqueous buffer. When deposited on magnetic nanoparticles, it retains 75% of its activity after 10 cycles of usage.
Iodination of industrially important aromatic compounds with aqueous potassium triiodide
Sharma,Srivastava,Agarwal,Diwedi
, p. 433 - 436 (2016/06/13)
A new reagent system consisting of aqueous KI3in AcOH and NaIO4as oxidant has been found to be effective in iodinating a variety of commercially important aromatic substrates under ambient conditions. The presence of Na2SO3enhances the yield and the product purity. The procedure ensures high yields (72–98%) at room temperature in a short reaction time. A remarkable feature of this system is that even acidsensitive functionalities like anilines can be iodinated quantitatively.
