bromoalkanes in a sentence

1. Chloro-and bromoalkanes are readily substituted by iodide in the Finkelstein reaction.
2. Alcohols may likewise be converted to bromoalkanes using hydrobromic acid or phosphorus tribromide ( PBr 3 ).
3. However, concern was beginning to be expressed about the impact of chloroalkanes and bromoalkanes on the ozone layer.
4. It's difficult to find bromoalkanes in a sentence.