In this experiment we will perform a Grignard addition to an ester. First we will form the Grignard reagent from magnesium and bromobenzene and then we will add it to methyl benzoate to produce triphenylcarbinol (also called triphenylmethanol). The sequence and mechanism are attached below    Why do you need to add HCl in this reaction?  What would happen if you did not add enough?

Organic Chemistry
9th Edition
ISBN:9781305080485
Author:John E. McMurry
Publisher:John E. McMurry
Chapter15: Benzene And Aromaticity
Section15.SE: Something Extra
Problem 13VC: Give IUPAC names for the following substances (red = O, blue = N):
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In this experiment we will perform a Grignard addition to an ester. First we will form the Grignard reagent from magnesium and bromobenzene and then we will add it to methyl benzoate to produce triphenylcarbinol (also called triphenylmethanol). The sequence and mechanism are attached below 

 

Why do you need to add HCl in this reaction?  What would happen if you did not add enough? 

Br
MgBr
THF
+
Mg
warm
phenylmagnesium bromide
bromobenzene
OMgBr
MgBr
HC1
OCH3
+ MgBr(ОH)
+
H2O
methyl benzoate
Triphenylcarbinol
Transcribed Image Text:Br MgBr THF + Mg warm phenylmagnesium bromide bromobenzene OMgBr MgBr HC1 OCH3 + MgBr(ОH) + H2O methyl benzoate Triphenylcarbinol
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Grignard reagent plays a vital role in organic chemistry.It has the tendency to form carbon-carbon bond.Here we will discuss the importance of addition of HCl in grignard reaction.

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