Definition of Phosphonium. Meaning of Phosphonium. Synonyms of Phosphonium

Here you will find one or more explanations in English for the word Phosphonium. Also in the bottom left of the page several parts of wikipedia pages related to the word Phosphonium and, of course, Phosphonium synonyms and on the right images related to the word Phosphonium.

Definition of Phosphonium

Phosphonium
Phosphonium Phos*pho"ni*um, n. [Phosphorus + ammonium.] (Chem.) The hypothetical radical PH4, analogous to ammonium, and regarded as the nucleus of certain derivatives of phosphine.

Meaning of Phosphonium from wikipedia

- In chemistry, the term phosphonium (more obscurely: phosphinium) describes polyatomic cations with the chemical formula PR+ 4 (where R is a hydrogen or...
- olefination is a chemical reaction of an aldehyde or ketone with a triphenyl phosphonium ylide called a Wittig reagent. Wittig reactions are most commonly used...
- Phosphonium iodide is a chemical compound with the formula PH 4I. It is an example of a salt containing an unsubstituted phosphonium cation (PH+ 4). Phosphonium...
- Consequently, the carbon anion is trigonal pyramidal.[citation needed] Phosphonium ylides are used in the Wittig reaction, a method used to convert ketones...
- organophosphorus compounds. Compounds with the formula [PR4+]X− comprise the phosphonium salts. These species are tetrahedral phosphorus(V) compounds. From the...
- to be sold commercially. Wittig reagents are usually prepared from a phosphonium salt, which is in turn prepared by the quaternization of triphenylphosphine...
- group that bears no hydrogen atom, such as a quaternary ammonium or phosphonium cation (generally: onium ions), and with a negatively charged functional...
- In organic chemistry, phosphonium coupling is a cross-coupling reaction for organic synthesis. It is a mild, efficient, chemoselective and versatile methodology...
- completely and incorporate the HOAt/HOBt moiety as an aminium/uronium or phosphonium salt of a non-nucleophilic anion (tetrafluoroborate or hexafluorophosphate)...
- (1 - A phosphite) with the electrophilic alkyl halide (2) to give a phosphonium salt as an intermediate (3). These intermediates are occasionally stable...