ethyl 2-hydroxy-2-methyl-4-phenylbut-3-ynoate

octa-1,3-diynylbenzene

N-[dimethyl(2-phenylethynyl)silyl]-N-ethylethanamine

4-methyl-1-phenylpent-4-ene-1,3-dione

1-cyclohex-2-en-1-ylethenylbenzene