How is triphenylmethanol made?

2020-01-10 by No Comments

How is triphenylmethanol made?

magnesium bromide, and use it to synthesize the alcohol triphenylmethanol via Grignard reaction. This Grignard reaction was performed through the reaction between phenyl magnesium bromide and benzophenone, followed by an acid work-up.

What will happen if you add the benzophenone to the Grignard reagent too quickly?

What would happen if you tried to make a Grignard reagent using ethanol as the solvent? If the benzophenone you used was wet, then you would not have formed the Grignard adduct, or at least you would have formed less of it, and a side-product would have formed.

How do you recrystallize triphenylmethanol?

*Note: If time permits and the melting point of the triphenylmethanol is low or the crystals are darkly colored, a recrystallization may be done. To recrystallize the product, dissolve the crystals in a minimum volume of boiling isopropanol (start with 1 ml) using the microscale pipet technique.

Why is triphenylmethanol important?

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.

How do you get triphenylmethanol?

Ernest Z. To calculate the percent yield of triphenylmethanol, you divide the actual yield by the theoretical yield and multiply by 100.

What will happened if we add too much Bromobenzene during the preparation of Grignard reagent?

How fast did you add the bromobenzene solution? If you added it too fast, you obtained a lot of biphenyl and the yield of benzoic acid will be very low. In addition, you probably observe that a lot of the Mg-turnings did not dissolve either.

How do you calculate triphenylmethanol yield?

To calculate the percent yield of triphenylmethanol, you divide the actual yield by the theoretical yield and multiply by 100.

Is Triphenylmethanol soluble in water?


Boiling Point 360°C to 380°C
Solubility Information Soluble in dioxane,ethanol,water,ether and benzene.
Formula Weight 260.34
Percent Purity 98%
Chemical Name or Material Triphenylmethanol

What will happened if we add too much bromobenzene during the preparation of Grignard reagent?

What happens when benzophenone is mixed with triphenylmethanol?

benzophenone to form triphenylmethanol (see Figure 2). This product is a tertiary alcohol with three benzene rings, all of which are attached to a central carbon atom. Figure 2. Reaction of benzophenone with phenylmagnesium bromide (Pavia 303). There are no common uses or commercial applications for triphenylmethanol.

How is triphenylmethanol synthesized from the Grignard reaction?

In this experiment, triphenylmethanol was synthesized from the reaction of the Grignard reagent (phenyl magnesium bromide) with benzophenone (a ketone) and hydrolysis with HCL. The final product was purified and characterized using TLC and IR spectroscopy. The final product was weighed and the percentage yield calculated.

Which is the reagent used to prepare triphenylmethanol?

As demonstrated in the lab, phenylmagnesium bromide, an organic halide, can react with methyl benzoate along with the Grignard reagent to produce triphenylmethanol.

How to isolate triphenylmethanol from diethyl ether?

Isolation and characterization of the product-Triphenylmethanol via extraction: Step 1: Using a clean filter-tip pipette, transfer the biphasic mixture from the round-bottom flask to a clean, dry 5 mL conical vial. Step 2: Rinse the round-bottom flask with a small amount of diethyl ether.