Autoxidation of oxymyoglobin. A nucleophilic displacement mechanism.
نویسندگان
چکیده
منابع مشابه
Investigation of Liquefaction Mechanism and Displacement in Buried Sand Layers
One of the most important reasons for damages during earthquakes is the liquefaction of loose and saturated sand soils. However, in many regions with proper soil specifications, the large settlements have been observed in the ground surface. Loose sand layers buried in fine soils are one of the cases which may result in these problems and as a weak point during earthquake can cause this phenome...
متن کامل2-Oxo promoted hydrophosphonylation & aerobic intramolecular nucleophilic displacement reaction.
Highly efficient catalyst free methods for the synthesis of α-hydroxy-β-oxophosphonates and α-oxoesters have been described. The existence of a 2-oxo group in α-oxoaldehydes is a key factor in promoting the reaction of the tervalent phosphite form towards 2-oxoaldehydes in the synthesis of α-hydroxy-β-oxophosphonates. The in situ activated α-C-H atom of α-hydroxy-β-oxophosphonates sustains aero...
متن کاملNucleophilic displacement reactions of 5′-derivatised nucleosides in a vibration ball mill
Vibration ball-milling in a zirconia-lined vessel afforded clean and quantitative nucleophilic displacement reactions between 4-methoxybenzylthiolate salts and nucleoside 5'-halides or 5'-tosylates in five to 60 minutes. Under these conditions, commonly-encountered nucleoside cyclisation byproducts (especially of purine nucleosides) were not observed. Liquid-assisted grinding of the same 5'-iod...
متن کاملPreparation of Crystalline Oxymyoglobin from Horse Heart.
Recently great advances have been made in the preparation of pure myoglobin by the introduction of ion exchange cellulose column chromatography (1, 2). Myoglobin, however, shows a strong tendency to be oxidized to metmyoglobin during isolation procedures. For this reason all myoglobin preparations reported earlier were obtained in the form of metmyoglobin. Therefore, oxymyoglobin has usually be...
متن کامل5(6)-anti-Substituted-2-azabicyclo[2.1.1]hexanes: a nucleophilic displacement route.
Nucleophilic displacements of 5(6)-anti-bromo substituents in 2-azabicyclo[2.1.1]hexanes (methanopyrrolidines) have been accomplished. These displacements have produced 5-anti-X-6-anti-Y-difunctionalized-2-azabicyclo[2.1.1]hexanes containing bromo, fluoro, acetoxy, hydroxy, azido, imidazole, thiophenyl, and iodo substituents. Such displacements of anti-bromide ions require an amine nitrogen and...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1981
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(19)68615-1