👉 In organic chemistry, ethynylation is a process by which an aromatic ring in a benzene or other aromatic compound is joined to a carbon atom. This is achieved through a reaction where the ring of carbon atoms on the benzene ring is replaced with a group that acts as a substituent. For example: - Benzene (C6H6) can be ethynylated by replacing the C6 with an aldehyde or ketone group. - A carboxylic acid (such
