A new dibromination reaction involving the combination of dibromomalonate as the bromonium source and a titanium bromide species as the bromide source has been developed. Enantioselective catalysis has been achieved through apparent ligand acceleration by a tartaric acid-derived diol.

Green fractionation and a comprehensive overview of lignin molecular structures during the DES (deep eutectic solvent) pretreatment are very important for valorization whole biorefinery process. Herein, intractable woody biomass (poplar wood) was pretreated with five types carboxylic-acid-based DESs (acetamide served as an HBA (hydrogen bond acceptor), propanedioic acid, tartaric malic glutaric...

Fast disintegrating tablets of lorazepam were prepared by effervescent method with a view to enhance patient compliance. A 3(2) full factorial design was applied to investigate the combined effect of two formulation variables: amount of crospovidone and mixture of sodium bicarbonate, citric acid and tartaric acid (effervescent material) on in vitro dispersion time. Crospovidone (2-8% w/w) was u...

To better understand precursors of dicarboxylic acids in ambient secondary organic aerosol (SOA), we studied C4–C9 present SOA formed from the oxidation toluene, naphthalene, α-pinene, and isoprene. were analyzed by offline derivatization gas chromatography–mass spectrometry. We revealed that C4 including succinic acid, maleic fumaric malic DL-tartaric meso-tartaric acid are produced photooxida...

Pinidine is the main constituent of Pinus sabiniana and related plant species as determined, along with its chemical structure, by Tallent and co-workers over 40 years ag0.1 The complete stereochemistry of pinidine was unambiguously established by Hill to be la, usmg chemical and spectroscopic methods.2 Very recently, further work on the pinidine alkaloid contents of pine (Pinus) and spruce (Pi...

The synthesis and characterization of mixed ligand complexes of Fe (III) with tartaric acid/succinic acid and heterocyclic amines. These complexes were characterized on the basis of elemental analysis, conductometric, magnetic measurements, UVvis, IR spectral studies. All the complexes were found electrolytic and paramagnetic in nature with high spin octahedral structure. The synthesized comple...

The desired control of particle size, doping element composition, and surface structure of carbon dots (CDs) are vital for understanding the fluorescence mechanism and exploring their potential applications. Herein, nitrogen-doped CDs (N-doped CDs) have been synthesized with tartaric acid and various alkylol amines (monoethanolamine, biethanolamine and triethanolamine) under microwave irradiati...