Free radical reactions of halogenated bridged polycyclic compounds. Part 18. The addition of chlorine and bromine to 1,2,3,4,7,7-hexachloro-5-methylnorbornadiene

Abstract

The addition of chlorine and bromine to 1,2,3,4,7,7-hexachloro-5-methylnorbornadiene affords the respective 1 : 1 adducts of the addition of the elements of chlorine and bromine to the 5,6-double bond. In each case the two cis and the two trans isomers are formed. Such compounds are also formed when the elements of chlorine are provided from oxalyl chloride. Product formation is discussed in terms of the various factors involved in the radical-addition and chain-transfer steps of the reaction.