been obtained by reaction of triphenylbismuth with various monocarboxylic acids. By a ligand-exchange reaction, these Bi(III) carboxylates react with tertiary or benzylic-type bromides and afford esters. This reaction sequence constitutes a new efficient way for the temporary protection of carboxylic acidsunder mild conditions.
One-Step Bulk Synthesis of Stable, Near Unit-Cell Sized Oxide Nanoparticles and Nanoparticle Blends Using KO<sub>2</sub>
作者:Thomas E. Sutto
DOI:10.1021/ic500252c
日期:2014.5.5
Presented here is a novel one-step synthesis of oxide or hydroxide nanoparticles using, for the first time, potassium superoxide (KO2). This work demonstrates that the reaction of KO2 with different salt solutions produces grams of stable, near unit-cell sized nanoparticles. This new synthetic technique is applied to representative elements from across the periodic table to rapidly produce nanometer
Bismuth-containing compounds, coordination polymers, methods for modulating pharmacokinetic properties of biologically active agents, and methods for treating patients
申请人:Price John D.
公开号:US10150792B2
公开(公告)日:2018-12-11
Bismuth-containing compounds include bismuth and a biologically active agent coordinated to the bismuth. The biologically active agent includes at least one heteroatom configured for coordination with the bismuth. Coordination polymers include a polymer matrix that contains a bismuth-containing compound. Methods for modulating a pharmacokinetic property of a biologically active agent include coordinating the biologically active agent to bismuth to form a bismuth-containing compound, and administering the bismuth-containing compound orally to a patient. Methods for treating Parkinson's disease, methods for treating hypothyroidism, methods for treating ulcerative colitis, and methods for treating cancer each include administering a bismuth-containing compound to a patient.
Bismuth(iii) 5-sulfosalicylate complexes: structure, solubility and activity against Helicobacter pylori
作者:Philip C. Andrews、Glen B. Deacon、Richard. L. Ferrero、Peter C. Junk、Abdulgader Karrar、Ish Kumar、Jonathan G. MacLellan
DOI:10.1039/b900774a
日期:——
Treatment of 5-sulfosalicylic acid (H3Ssal) with BiPh3 results in the formation of the first dianionic carboxylate–sulfonate bismuth complex, [PhBi(HSsal)H2O]∞1a, and its ethanol analogue [PhBi(HSsal)EtOH]∞1b (space groupP21/c), while Bi(OAc)3 gives the mixed monoanionic and dianionic complex, [Bi(HSsal)(H2Ssal)(H2O)3]2·2H2O}∞2 (space groupP). The three complexes are all polymeric in the solid state as determined by single crystal X-ray diffraction, with extended frameworks constructed from dimeric [Bi(HSsal)]2, 1a and 1b, or from [Bi(HSsal)(H2Ssal)]2 units, 2. The heteroleptic bismuth complexes 1a and 2 display remarkable aqueous solubility, 10 and 2.5 mg ml−1 respectively, resulting in a clear solution of pH 1.5. In contrast, 1b is essentially insoluble in aqueous environments. All three complexes show significant activity against the bacterium Helicobacter pylori of <6.25 μg ml−1.