The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 3-Pyridinepropionic acid( cas:3724-19-4 ) is researched.Quality Control of 3-Pyridinepropionic acid.Li, Yuqi; Sharma, Savita K.; Karlin, Kenneth D. published the article 《New heme-dioxygen and carbon monoxide adducts using pyridyl or imidazolyl tailed porphyrins》 about this compound( cas:3724-19-4 ) in Polyhedron. Keywords: preparation pyridyl imidazolyl tailed iron porphyrin; carbon monoxide adduct pyridyl imidazolyl tailed iron porphyrin; dioxygen adduct pyridyl imidazolyl tailed iron porphyrin; 1,2H-NMR spectroscopy; Base tethered heme complexes; Heme-FeIII-superoxo complexes; Reduced Heme-FeII complexes; heme-FeII-carbonyl complexes. Let’s learn more about this compound (cas:3724-19-4).
Inspired by the chem. relevant to dioxygen storage, transport and activation by metalloproteins, in particular for heme/copper oxidases, and carbon monoxide binding to metal-containing active sites as a probe or surrogate for dioxygen binding, a series of heme derived dioxygen and CO complexes have been designed, synthesized, and characterized with respect to their phys. properties and reactivity. The focus of this study is in the description and comparison of three types heme-superoxo and heme-CO adducts. The starting point is in the characterization of the reduced heme complexes, [(F8)FeII], [(PPy)FeII] and [(PIm)FeII], where F8, PPy and PIm are iron(II)-porphyrinates and where PPy and PIm possess a covalently tethered axial base pyridyl or imidazolyl group, resp. The spin-state properties of these complexes vary with solvent. The low temperature reactions between O2 and these reduced porphyrin FeII complexes yield distinctive low spin heme-superoxo adducts. The dioxygen binding properties for all three complexes are reversible, via alternate argon or O2 bubbling. Carbon monoxide binds to the reduced heme-FeII precursors to form low spin heme-CO adducts. The implications for future investigations of these heme O2 and CO adducts are discussed.
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Reference:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem