1. The problem statement, all variables and given/known data Show by means of equations how you could convert but-2-yne to 2,2,3-trichlorobutane 3. The attempt at a solution So, as far as I know, to make 2,3-dichlorobutane, all that is required is the addition of one mole of Cl2 in the presence of an organic solvent. My query is how to add just one more Cl to the structure. My first thought is to use 1.5 moles of Cl2 for each mole of but-2-yne: 2 C4H6 + 3Cl2 → C4H7Cl3 Is this the correct way to do this?