Refernces
10.1016/j.inoche.2011.04.018
The research focuses on the synthesis and characterization of three coordination polymers with varying dimensional architectures, ranging from 3D to 2D and 1D, using the same set of ingredients: Cd(II), 1,4-bis(2-methylbenzimidazol1-ylmethyl)benzene (bmb), and 1,3-benzenedicarboxylic acid (H2ip). The experiments involved controlling the hydrothermal reaction temperature to influence the conformations and coordination modes of the ligands, which in turn affected the dimensionality of the resulting products. The reactants were mixed in specific ratios and subjected to different temperatures (160°C, 130°C, and 100°C) to yield polymers 1, 2, and 3, respectively. The structures of these polymers were determined using single crystal X-ray diffraction analysis, and their thermal stabilities and photoluminescence properties were investigated through thermogravimetric analyses (TGA) and photoluminescence spectroscopy. The study revealed that higher temperatures favored the formation of higher dimensional products, and the dimensionality decreased with decreasing reaction temperature due to changes in ligand conformation and coordination mode.
10.1016/0040-4020(82)85161-2
The research investigates the rearrangement of oxirane-ethanols via alkoxyetains to produce oxetanes and oxolanes. The study aims to explore the factors influencing the formation of these cyclic compounds and to understand the mechanism of the rearrangement process. The researchers found that the choice between oxetane and oxolane formation depends on the degree of substitution of the oxirane ring and its configuration, with cyclization predominantly occurring at the more substituted carbon and the cis form favoring the formation of the smaller ring. The reaction proceeds with inversion of configuration at the site of oxygen attack, and the presence of a tin atom in a push-pull mechanism significantly aids the ring-opening process. The study concludes that the transposition method offers a convenient route to functional oxetanes, with high yields and minimal by-products. Key chemicals used in the research include oxirane-ethanols, methoxytributyltin, isophthalic acid, and various solvents such as phenylcyclohexane and ethers.
10.1080/00397910903064849
The research focuses on the creation of several C-nucleoside analogs using push–pull activated monosaccharide α-dimethylaminomethyleneulose (1) as a precursor. Key chemicals involved in the research include o-phenylenediamine, cyanamide, and dialkyl-3-oxoglutarates. The study details the synthesis of a benzodiazepine nucleoside analog (2) by reacting compound 1 with o-phenylenediamine in ethanol at reflux. Additionally, a reversed C-nucleoside analog with a pyrimidine ring (3) was synthesized by reacting compound 1 with cyanamide under basic conditions. Lastly, an isophthalic acid derivative (4) was obtained by reacting compound 1 with dialkyl-3-oxoglutarates in the presence of sodium ethoxide in ethanol under reflux. The synthesized compounds were characterized using various spectroscopic techniques, confirming their structures and yielding insights into their potential applications in pharmacological fields.
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