Question

After addition of the benzophenone solution to the Grignard reagent, you realize that you mistakenly used diethyl ether from the ether for workup bottle (NOT the correct anhydrous ether bottle) to make the benzophenone solution. Draw the chemical structure of the organic product that was formed from a side reaction (NOT the desired reaction) that likely occurred in your reaction vial.

Answer 1

Answer: Benzene + Mg(OH)Br

Explanation:

The Grignard reagent are prepared by adding up the halogeno-alkane to small bits of magnesium in a flask containing ethoxy-ethane. The side product will be griganrd reagent react with water to form alkanes the reaction is shown below

Answer 2

Triphenylmethanol

Step-by-step explanation:

The Grignard Synthesis is useful for adding carbons to molecules that have a carbonyl carbon. Depending on the compound you start with, you either produce alcohols or acid-derivatives.

Triphenylmethanol (also known as triphenylcarbinol, TrOH) is an organic compound. It is a white crystalline solid that is insoluble in water and petroleum ether, but well soluble in ethanol, diethyl ether, and benzene. In strongly acidic solutions, it produces an intensely yellow color, due to the formation of a stable "trityl" carbocation. Many derivatives of triphenylmethanol are important dyes.

The preparation of triphenylmethanol from methyl benzoate or benzophenone and phenylmagnesium bromide is a common laboratory experiment for illustrating the Grignard reaction. An alternative starting material is diethyl carbonate.