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Triphenylphosphine Dichloride
Triphenylphosphine dichloride, Ph3PCl2, is a Halogenation, chlorinating agent widely used in organic chemistry. Applications include the conversion of Alcohol (chemistry), alcohols and ethers to alkyl chlorides, the cleavage of epoxides to vicinal dichlorides and the chlorination of carboxylic acids to acyl chlorides. Structure In polar solvents such as acetonitrile, Ph3PCl2 adopts an ionic phosphonium salt structure, [Ph3PCl+]Cl−, whereas in non-polar solvents like diethyl ether it exists as a non-solvated Trigonal bipyramidal molecular geometry, trigonal bipyramidal molecule. Two [Ph3PCl+] species can also adopt an unusual dinuclear ionic structure—both interacting with a Cl− via long Cl–Cl contacts. File:Chlorotriphenylphosphonium-chloride-2D.png File:Chlorotriphenylphosphonium-chloride-DCM-solvate-from-xtal-3D-balls.png File:Chlorotriphenylphosphonium-chloride-DCM-solvate-from-xtal-3D-vdW.png Synthesis Triphenylphosphine dichloride is usually prepare ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Victor Grignard
Francois Auguste Victor Grignard (6 May 1871 – 13 December 1935) was a French chemist who won the Nobel Prize for Chemistry, Nobel Prize for his discovery of the eponymously named Grignard reagent and Grignard reaction, both of which are important in the formation of carbon–carbon bonds. Biography Grignard was the son of a sail maker. His character was described as having humble and friendly attitude. After attempting to major in mathematics, Grignard failed his entrance exams before being drafted into the army in 1892. After one year of service, he went back to pursue mathematics at the University of Lyon and finally obtained his degree Licencié ès Sciences Mathématiques in 1894. In December of the same year, he transferred to chemistry and began working with Professors Philippe Barbier (1848–1922) and Louis Bouveault (1864–1909). After working with stereochemistry and enines, Grignard was not impressed with the subject matter and asked Barbier about a new directio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
