Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels. 81058-27-7, Name is (2R,3R,4S,5R,6R)-2-Bromo-6-((pivaloyloxy)methyl)tetrahydro-2H-pyran-3,4,5-triyl tris(2,2-dimethylpropanoate), molecular formula is C26H43BrO9. In an article, author is Tumer, Yasemin,once mentioned of 81058-27-7, Recommanded Product: 81058-27-7.
Phosphorus-nitrogen compounds: Part 43. Syntheses, spectroscopic characterizations and antimicrobial activities of cis- and trans-N/O dispirocyclotriphosphazenes containing ferrocenyl pendant arms
The cis- (5 and 6) and trans-dispiroferrocenylphosphazenes (7 and 8) containing ferrocenyl pendant arms were synthesized from the reactions of hexachlorocyclotriphosphazene, N3P3Cl6, with two equimolar amounts of the sodium salts of the ligands; [2-(N-ferrocenylmethylamino)-1-ethanoxide (1) and 3-(N-ferrocenylmethylamino)-1-propanoxide (2)]. The monospiroferrocenylcyclotriphosphazenes (3 and 4) were also isolated from the reaction mixtures as by-products. The characterizations of the new compounds (5-8) were elucidated using MS, FTIR and H-1, C-13 and P-31 NMR techniques. The molecular structure of 6 was established by X-ray crystallography. As expected, compounds 5, 6, 7 and 8 have two stereogenic P-atoms. The compounds 5 and 6 are likely to be in cis (meso) forms, whereas the compounds 7 and 8 are in trans (racemic) forms. Besides, the antimicrobial activities of the cyclotriphosphazenes against G(+) and G(-) bacteria and fungi were evaluated. The interactions of the compounds with pBR322 plasmid DNA were also investigated. (C) 2018 Elsevier B.V. All rights reserved.
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Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis¡ªI. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
,Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis