Discussion The chlorinolytic cleavage of carbon-sulfur (CS) bonds is well documented and a CS bond rupture effected by bromine has been suggested but no carbon-fluorine bonds have been made by this route. Compounds in the cysteine-cystine system have been converted to their 3-chloroalanine analogues. lb, c These reactions were carried out with suspensions of hydrochlorides in methylene chloride and their mechanistic relevance to ...