Complex sentence: Catalysts for cyclotrimerization are highly selective for triple bonds, which gives the reaction a fairly wide substrate scope; alcohols, ethers, amines, and carbonyl compounds (ketones, esters, amides, and carboxylic acids) are all well tolerated.
Split into simpler sentences: Catalysts for cyclotrimerization are highly selective for triple bonds, which gives the reaction a fairly wide substrate scope. Alcohols, ethers, amines, and carbonyl compounds (ketones, esters, amides, and carboxylic acids) are well tolerated.