draw the mechanism for the grignard rxn of the synthesis of triphenylmethanol from Benzophenone
draw the mechanism for the grignard rxn of the synthesis of triphenylmethanol from Benzophenone
Provide a synthesis of triphenylmethanol that uses a Grignard reaction and does not start with benzophenone.
A student decides to perform the synthesis of triphenylmethanol via the grignard reaction. She starts with 9.5g of bromobenzene (M.W. = 157) and uses 1.21g of Mg (M.W. = 24.3) and 9.1g of benzophenone (M.W. = 182). a. Calculate the limiting reagent. b. Calculate the theoretical yield of triphenylmethanol (M.W. = 260.3).
Draw the mechanism for this reaction. 1) Mg, Et20 2) bromobenzene triphenylmethanol benzophenone 3) H2O
The synthesis of triphenylmethanol via the grignard reaction is
given by the following equation (below):
A student decides to perform the above reaction. She starts with
200 mg of bromobenzene (M.W. = 157) and uses 45 mg of Mg (M.W. =
24.3) and 0.36 g of benzophenone (M.W. = 182).
a. Calculate the limiting reagent
b. Calculate the theoretical yield of triphenylmethanol (M.W. =
260.3)
c. She obtains 0.172 grams of of the product. What is her actual
yield?
d....
What is the theoretical yield, pure % yield and crude % yield of Triphenylmethanol by Grignard reagent synthesis. 0.33 grams (0.22 mL) of bromobenzene is used (MW=157) with 0.068 grams of Magnesium (MW=24.32). 0.364 grams (MW=182.22) of benzophenone is used as well. 0.290 grams of Triphenylmethanol were obtained.
Grignard RXN: Please help me with percent yield! Is it 1:1
(ketone:alcohol)?
We used 0.129g fo benzophenone and 0.658 mL of
phenylmagnesium
Our actual yield was 0.0694g
1) PhMgCI :OH Ph| Phi Ph Ph Phi benzophenone triphenylmethanol Reaction of PhMgCl chloride with benzophenone.
Please draw the complete "arrow-pushing" mechanism for: A. The reaction of bromobenzene and magnesium (in the presence of ether) to form a Grignard reagent B. The reaction of the Grignard reagent (from part A.) with Benzophenone (and HCl) to form Triphenylmethanol
Draw molecular structures of bromobenzene, benzophenone, and triphenylmethanol and biphenyl in the order of increasing polarity (east polar < most polar).
What would happen if you added the HCl to the Grignard reagent before adding benzophenone? Draw a reaction mechanism to support your answer.
Triphenylmethanol can also be formed by the reaction of phenylmagnesium bromide with either benzophenone or diethyl carbonate. Give the mechanisms for both reactions and tell how many equivalents of the Grignard reagent would be needed.