نتایج جستجو برای: 2 acetyl γ butyrolactone
تعداد نتایج: 2593808 فیلتر نتایج به سال:
In order to recycle nitrogen from nitrogen-rich waste streams, particularly protein waste, we studied the decarboxylation of pyroglutamic acid and glutamic acid in a one-pot reaction to bio-based 2-pyrrolidone. After the screening of a wide range of supported Pd and Pt catalysts, 5 wt% Pd/Al2O3 displayed the highest yield (70%) and selectivity (81%) for the decarboxylation of pyroglutamic acid ...
Kinsenoside (1) and goodyeroside A (2), two naturally occurring stereoisomers with diverse biological activities, have been synthesized efficiently by a chemo-enzymatic approach with a total yield of 12.7%. The aglycones, (R)- and (S)-3-hydroxy-γ-butyrolactone, were prepared from D- and L-malic acid by a four-step chemical approach with a yield of 75%, respectively. These butyrolactones were th...
The fundamental expressions governing specific optical rotations (SORs) of homochiral systems exhibiting monomer-dimer equilibria are presented. These equations are then utilized with the experimental measurements of wavelength resolved circular birefringence for (R)-(-)-α-hydroxy-β,β-dimethyl-γ-butyrolactone, to determine the wavelength resolved SORs of monomer and dimer components for the fir...
Zn electrodes in aqueous media exhibit an unstable Zn/electrolyte interface due to severe parasitic reactions and dendrite formation. Here, a dynamic modulation based on the molecular switch strategy is reported by hiring γ-butyrolactone (GBL) ZnCl2/H2O electrolyte. During plating, increased interfacial alkalinity triggers from GBL γ-hydroxybutyrate (GHB). GHB strongly anchors surface via tripl...
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