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Alkene oxymercuration-demercuration: Stereospecific: Can only be anti addition – water kicks out the mercury from underneath the intermediate three-membered ring. The reaction is considered Markovnikov as it results in water addition with same regiospecificity as a direct hydration reaction. Alkene hydroboration-oxidation
In practice, the mercury adduct product created by the oxymercuration reaction is almost always treated with sodium borohydride (NaBH 4) in aqueous base in a reaction called demercuration. In demercuration, the acetoxymercury group is replaced with a hydrogen in a stereochemically insensitive reaction [6] known as reductive elimination. The ...
Conversion of 2,5-dimethylhexyne-2,5-diol to 2,2,5,5-tetramethylte-trahydrofuran-3-one. Mercury sulfate, as well as other mercury(II) compounds, are commonly used as catalysts in oxymercuration-demercuration, a type of electrophilic addition reaction that results in hydration of an unsaturated compound.
Mercury(II) acetate, also known as mercuric acetate is a chemical compound, the mercury(II) salt of acetic acid, with the formula Hg(O 2 CCH 3) 2.Commonly abbreviated Hg(OAc) 2, this compound is employed as a reagent to generate organomercury compounds from unsaturated organic precursors.
Protein folding problem: Is it possible to predict the secondary, tertiary and quaternary structure of a polypeptide sequence based solely on the sequence and environmental information? Inverse protein-folding problem: Is it possible to design a polypeptide sequence which will adopt a given structure under certain environmental conditions?
The general chemical equation for the hydration of alkenes is the following: . RRC=CH 2 + H 2 O → RRC(OH)-CH 3. A hydroxyl group (OH −) attaches to one carbon of the double bond, and a proton (H +) adds to the other.
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1 Third step in the mechanism for Oxymercuration. 1 comment. 2 Demercuration Mechanism. 3 comments. 3 Shall we buy the reagent BH3-THF in the stores? 2 comments.