➠The one carbon homologation of aldeehydes to the corresponding terminal alkynes, using tetrabromomethane (CBr4) and triphenylphosphine (PPh3) is known as Corey Fuchs alkyne synthesis.
➠The synthetic possibility of trans forming aldehyde to corresponding one carbon chain extended alkynes occurs by the treatment of dibromo olefin with two moles of n-BuLi followed by the hydrlysis.
➠E.g.
➠Question 1:- Predict the products A and B in the following reaction.
➠Solution:-
➠Question 2:- Predict the product P in the following reaction.
➠Solution:-
End
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