- phosphonium salt
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English-Bulgarian polytechnical dictionary . 2013.
phosphonium salt
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Phosphonium salt — A phosphonium salt is a salt containing the phosphonium (PH4+) ion such as phosphonium iodide (PH4+I−). More commonly, phosphonium refer to an organic derivative such as tetraphenylphosphonium chloride, (C6H5)4P+ Cl and tetramethylphosphonium… … Wikipedia
Phosphonium — In chemistry, the phosphonium cation is a positively charged polyatomic ion with the chemical formula PH4+, resulting from protonation of phosphine. It has a molar mass of 35.01 g/mol.Salts containing four alkyl or aryl groups attached to a… … Wikipedia
Tetrakis(hydroxymethyl)phosphonium chloride — Chembox new Name = Tetrakis(hydroxymethyl)phosphonium chloride ImageFile = Tetrakis(hydroxymethyl)phosphonium chloride.png OtherNames = Tetrahydroxymethylphosphonium chloride, THPC Section1 = Chembox Identifiers CASNo = 124 64 1 Section2 =… … Wikipedia
Wittig reaction — The Wittig reaction is a chemical reaction of an aldehyde or ketone with a triphenyl phosphonium ylide (often called a Wittig reagent) to give an alkene and triphenylphosphine oxide. [cite journal author = Georg Wittig, Ulrich Schöllkopf journal … Wikipedia
Triphenylphosphine — Chembox new Name = Triphenylphosphine ImageFile = Triphenylphosphine structure.svg ImageName = Triphenylphosphine ImageFile1 = Triphenylphosphine ray 3D balls.png ImageName1 = Ball and stick model of the triphenylphosphine molecule IUPACName =… … Wikipedia
Allylic rearrangement — An allylic rearrangement or allylic shift is an organic reaction in which the double bond in an allyl chemical compound shifts to the next carbon atom. It is encountered in nucleophilic substitution.In reaction conditions that favor a SN1… … Wikipedia
Phase transfer catalyst — A phase transfer catalyst or PTC in chemistry is a catalyst which facilitates the migration of a reactant in a heterogeneous system from one phase into another phase where reaction can take place. Ionic reactants are often soluble in an aqueous… … Wikipedia
Methoxymethylenetriphenylphosphine — is a Wittig reagent with used as an reagent in the homologization of aldehydes and ketones to extended aldehydes, an organic reaction first reported in 1958 [1]. The reagent can be prepared (scheme 1) by reaction of triphenylphosphine 1 with… … Wikipedia
Progesterone — Systematic (IUPAC) name Pregn 4 ene 3,20 dione … Wikipedia
Ferrocene — Chembox new ImageFileL1 = Ferrocene 2D.png ImageSizeL1 = 80 px ImageFileR1 = Ferrocene 3D balls B.png ImageSizeR1 = 120 px IUPACName = ferrocene, bis(η5 cyclopentadienyl)iron OtherNames = ferrocene, iron cyclopentadienyl Section1 = Chembox… … Wikipedia
Combretastatin — IUPAC name 5 [(2R) 2 hydroxy 2 (3,4,5 trimethoxyphenyl)ethyl] 2 methoxyphenol … Wikipedia
