نتایج جستجو برای: carbonyl compounds
تعداد نتایج: 237126 فیلتر نتایج به سال:
We report a one-pot synthesis of nitrogen heterocyclic compounds initiated by the allylation of the formyl group of bifunctional carbonyl compounds accompanying chemo-, regio-, and diastereoselective carbon-carbon bond formation in side chain moieties.
The synthesis of tetranuclear gold complexes, a structurally unprecedented octanuclear complex with a planar [Au(I) 8 ] core, and pentanuclear [Au(I) 4 M(I) ] (M=Cu, Ag) complexes is presented. The linear [Au(I) 4 ] complex undergoes C-H functionalization of carbonyl compounds under mild reaction conditions. In addition, [Au(I) 4 Ag(I) ] catalyzes the carbonylation of primary amines to form ure...
A few analogues of atevirdine or 1-[(5-methoxyindol-2-yl) carbonyl]-4-[3- (ethylamino)-2-pyridyl] piperazine – an anti-HIV belonging to non-nucleoside reverse transcriptase inhibitors were synthesized and evaluated for anti-HIV activity. Replacement of indolyl moiety with 2-alkylthio-1-benzyl-5-imidazolyl substituent afforded 1-[2-(alkylthio-1-benzyl-5-imidazolyl) carbonyl]-4-[3-(isopropylamino...
Gas-phase photolysis is an important tropospheric sink for many carbonyl compounds; however the significance of direct photolysis of these compounds dissolved in cloud and fog droplets is uncertain. We develop a theoretical approach to assess the importance of aqueous photolysis for a series of carbonyls that possess carboxyl and hydroxyl functional groups by comparison with rates of other atmo...
frying oils showed an increase in peroxide value (pv) at the initial stages of the frying process followed by a decrease, and there was no correlation between pv and total polar compounds (tpc) in the same set of frying oils. all the frying oils had pvs lower than 4.42 meq o2 kg-1 oil during the frying process and, consequently, none of them was above the limit of 10 meq o2 kg-1 oil for edible ...
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