Abstract
The reaction of propadiene with Br2, BrCl, and Cl2 is studied in various solvents and at different temperatures. It is shown that only partial addition takes place, and further that the initial attack of the Hal+ ion takes place at the central C atom. The findings are interpreted as the result of the formation of the intermediary carbonium ion, stabilized by resonance: magnified image .In the reaction with Cl2, propargyl chloride is formed besides 2,3‐dichloro‐propene. The way in which the former product is formed, is discussed.