Posted: November 2nd, 2016

The reaction between allyl bromide and zinc is called an oxidative addition. Which reagent is oxidized and which one is reduced

Pre-Lab Questions: 1. The reaction between allyl bromide and zinc is called an oxidative addition. Which reagent is oxidized and which one is reduced? 2. The following reaction to make a Grignard reagent does not work. Explain why, and draw the actual product of the reaction. 3. Draw the product of the reaction between allylzinc bromide and ethanal. 4. Draw the product of the reaction between allylzinc bromide and water 5. For nucleophilic addition reactions of allylzinc, like the one in this experiment, place the following compounds in order of reactivity from least reactive to most reactive and explain why: Benzoic acid, benzaldehyde, methyl benzoate, acetophenone. 6. Draw the product of the reaction between ethylzinc bromide and benzaldehyde. 7. There are three possible ways to produce the following alcohol by an organozinc reaction. Draw the reactants that would for each reaction. Background In this experiment you will perform a nucleophilic addition reaction between allylzinc bromide and 3-pentanone. You will not be drying your glassware in the oven before performing the reaction, and so it is important to inspect each piece for residual water before assembling your apparatus. If the glassware needs to be cleaned before use or is still wet from cleaning after the previous lab, the water can be removed by first rinsing the glassware with acetone, allowing it to air dry for a few minutes, and then rinsing with a very small amount of diethyl ether and again allowing it to air dry