Phenyl Grignard Addition To Benzophenone Lab Report

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Marissa De la Paz 29 October 2015 Landstrom T/R, 8am Experiment 13B: Phenyl Grignard Addition to Benzophenone The objective of this experiment is to first generate a Grignard reagent, then use that to synthesize triphenylmethanol. The Grignard reagent is necessary to create a new C—C bond. The formation of triphenylmethanol is broken down in several steps. Magnesium is added to a capped and dried flask with a crystal of iodine, ether and a drop of 1,2-dibromoethane. The iodine was essential to activate the magnesium. Ether was used as the solvent because there are no acidic hydrogen’s on ether that can potentially react with the Grignard reagent and also because ether has two lone pairs on the oxygen that can help to stabilize the magnesium

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