Draw the following reaction schemes: formation of
phenylmagnesium bromide; the reaction of PhMgBr with
CO2; the protonation of the benzoate anion.
Write a short introduction to the experiment
of Grignard Synthesis of Benzoic
acid. Give background on organometallic compounds in
general and Grignard reagents in particular.
List the expected IR peaks (stretches, resonances) that will
indicate if the reaction was successful. Disappearance of a peak
can also be an indication of a chemical transformation.
Complete the reaction stoichiometry table and
calculate the theoretical yield. Theoretical yield assumes a
complete reaction. Show your calculations and enter the results in
the last row of the stoichiometry table.
Chemical
n
(mol)
MW
(g/mol)
m
(g)
d
(g/mL)
V
(mL)
c
(M)
Bp/mp
(°C)
bromobenzene
—
—
Magnesium
—
—
—
—
Carbon dioxide (solid)
—
—
—
—
—
Diethyl ether
—
—
—
Benzoic acid
—
—
—