نتایج جستجو برای: direct bond
تعداد نتایج: 491695 فیلتر نتایج به سال:
objective(s):the present study reports the development and validation of a sensitive and rapid extraction method beside high performance liquid chromatographic method for the determination of crocetin in human serum. materials and methods:the hplc method was carried out by using a c18 reversed-phase column and a mobile phase composed of methanol/water/acetic acid (85:14.5:0.5 v/v/v) at the flow...
Biomolecules have been attached to porous silicon by a new linking method that forms a direct Si-C bond on the surface and retains the photoluminescence of the porous silicon.
The rhodium-catalyzed oxidative alkenylation of N-benzyltriflamides with olefins followed by an intramolecular cyclization via C-H bond activation is described. This method results in the direct and efficient synthesis of highly substituted isoindoline frameworks.
Phenol is added to acetophenone (methyl phenyl ketone) and six of its halogenated derivatives in a supersonic jet expansion determine the hydrogen bonding preference cold isolated 1:1 complexes by linear infrared spectroscopy. Halogenation found have pronounced effect on docking site this intermolecular ketone balance experiment. The spectra unambiguously decide between competing variants group...
Direct carbon–carbon bond formation via soft enolization: aldol addition of α-halogenated thioesters
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