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Phosphonium ion Structure of PH + 4, the parent phosphonium cation. In chemistry, the term phosphonium (more obscurely: phosphinium) describes polyatomic cations with the chemical formula PR + 4 (where R is a hydrogen or an alkyl, aryl, organyl or halogen group). These cations have tetrahedral structures.
It is the bromide salt of a phosphonium cation. It is a white salt that is soluble in polar organic solvents. Synthesis and reactions ...
The mechanism of the Michaelis–Arbuzov reaction. The Michaelis–Arbuzov reaction is initiated with the S N 2 attack of the nucleophilic phosphorus species (1 - A phosphite) with the electrophilic alkyl halide (2) to give a phosphonium salt as an intermediate (3).
Wittig reagents are usually prepared from a phosphonium salt, which is in turn prepared by the quaternization of triphenylphosphine with an alkyl halide. Wittig reagents are usually derived from a primary alkyl halide. Quaternization of triphenylphosphine with secondary halides is typically inefficient.
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Decyl(triphenyl)phosphonium (DTPP) is the organophosphorus cation with the formula C 10 H 21 P(C 6 H 5) 3 +. It is a lipophilic quaternary phosphonium cation. It forms the basis for many mitochondrial-targeted drugs, including MitoQ, MitoE, and SkQ .
Two people were arrested near Vice President Kamala Harris’ Brentwood home as the neighborhood was in the evacuation zone because of the threatening Palisades Fire. The LAPD detained the two men ...
A study confirmed that side effects like pancreatitis and kidney damage are possible while taking GLP-1s like Ozempic. Here's what a doctor wants you to know.