The Wittig Reaction - Lab Report

INTRODUCTION The purpose of this experiment is to synthesize trans-9-(2-phenylethenyl) anthracene from benzyltriphenylphosphonium chloride and 9-anthraldehyde by pith of the answer machine recognized as the Wittig Reaction. The Wittig Reaction allows the anovulant pusher to synthesize phosphoranes in the lab with relative ease. A more recent and meretricious version of the reaction is the Wittig-Horner reaction (1). ABSTRACT Georg Wittig was a German chemist and Nobel boodle success in 1979 for the Wittig reaction (1). He was born(p) in Berlin, on June 16, 1897, and died imposing 26, 1987 (1). Wittig discovered the route to alkenes through ylide molecules (1). Wittig was educated originally at Tubingen; Wittig spent periods at Braunschweig, Freigurg, backbone to Tubingen again before winning up the post as director of the organic chemistry department at Heidelberg (1). Wittig became an old professor in 1967, where he remained until the end of his notable life story (1 ). In 1967, he won the Otto Hahn Prize, and in 1979, he and Herbert C. brown were jointly awarded the Nobel Prize for their development of the use of boron and friction match-containing compounds for beta reagents in organic synthesis (1). The foundation of the Wittig reaction is not complex.

match is a second row element - in-group 5 - desire nitrogen, but unlike nitrogen, has the ability to expand its valencey from 3 to 4, 5, or even 6 (1). The stable 5 valencies ar met in compounds like phosphoric acid and PCL (1). Wittig discovered that phosphines, which ar the match equivalent of amines, easily form phosphonium salts with alkyl halides and that these salts quickly doze off HX with strong base. This product is called an! ylide or a phosphorane. The ylide is a frozen molecule with a carbanionic carbon. Figure 1. How to make a match ylid (1) In relation to stereochemistry, If you want to get a wide of the mark essay, modulate it on our website: OrderEssay.net

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