2-(2-戊炔-1-基)-2-环戊烯-1-酮

3-methyl-2-phenylselanylcyclopentan-1-one

λ¹-selanylbenzene,tributyltin

2-(hydroxy-phenyl-methyl)-cyclopent-2-en-1-one

3-butyl-2-methylcyclopent-2-en-1-one