CHM 226 - Tech 721 - Wittig Rxn

CHM 226 - Tech 721 - Wittig Rxn - TECH 721 A Wittig...

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TECH 721 A Wittig Reaction INTRODUCTION The purpose of conducting this experiment is to gain further knowledge and experience on the synthesis and analysis of the Wittig Reaction. The aim is to synthesize trans -9-(2- phenylehtynyl) anthracine and characterize it. This type of reaction is a very important addition reaction in organic chemistry due to its high level of regioselectivity. It allows the chemist to choose the precise location of the newly formed bond in order for specific alkenes can easily be created. PROCEDURE First, 0.210g of benzyltriphenylphosphonium chloride and 0.110g of 9-anthraldehyde were weighed and placed into a 5 mL conical vial. About 0.6 mL of dichloromethane was added to the vial along with a magnetic stir bar and placed on a magnetic stirrer. While the solution is being stirred, 0.26 mL of 50% aqueous sodium hydroxide was added at a rate of one drop every seven seconds. The mixture was allowed to stir for 30 minutes. The mixture was then transferred to a 10 mL centrifuge tube.
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This note was uploaded on 05/04/2008 for the course CHM 226 taught by Professor Jesse during the Spring '07 term at Rhode Island.

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CHM 226 - Tech 721 - Wittig Rxn - TECH 721 A Wittig...

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