نتایج جستجو برای: carbonyl groups
تعداد نتایج: 739870 فیلتر نتایج به سال:
the difficult to handle and store zinc borohydride, zn(bh4)2, is stabilized by supporting it on polyvinylpyridine. this new mild, efficient, selective, and regenerable polymer supported borohydride reducing agent reduces a variety organic compounds such as, aldehydes, a-b-unsaturated carbonyl compounds, acid chlorides, epoxides, disulfides, as well as reductive acetylation of carbonyl compounds...
Determination of Carbonyl Functional Groups in Bio-oils by Potentiometric Titration: The Faix Method
In the crystal structure of the title compound, C16H24N4O4, mol-ecules are linked by N-H⋯O hydrogen bonds between the carbonyl groups of the carbamoyl and amido functional groups and the amino groups, and by N-H⋯N hydrogen bonds between the amino group and the pyridine ring, forming two-dimensional networks parallel to the ab plane.
Current lithium batteries operate on inorganic insertion compounds to power a diverse range of applications, but recently there is a surging demand to develop environmentally friendly green electrode materials. To develop sustainable and eco-friendly lithium ion batteries, we report reversible lithium ion storage properties of a naturally occurring and abundant organic compound purpurin, which ...
Abstract Regioselectivity of visible-light-induced transformations a range (hetero)aryl alkyl-substituted ketones bearing several competitive reactive sites ( ? -carbonyl, benzyl and aromatic ring) with N- bromosuccinimide (NBS) was studied under solvent-free reaction conditions (SFRC) in the absence inert-gas atmosphere, radical initiators catalysts. An 8-W energy-saving household lamp used fo...
13C NMR spectroscopic investigations were conducted for various amino acid derivatives and peptides. It was observed that chemical shifts of the carbonyl carbons are correlated with solvent polarities, but extent depends on structures. The size functional groups inter- intra-molecular hydrogen bonding appear to be major contributors this tendency.
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