Kn. Koch et al., The preparation of stable alpha-chlorosulfenyl chlorides from sterically crowded tetramethylcyclobutanethiones and chlorine, EUR J ORG C, (1), 1999, pp. 83-86
The sterically crowded 2,2,4,4-tetramethyl-3-thioxocyclobutanone (7) and it
s dithio analogue 9 were found to react readily with gaseous chlorine to af
ford 1:1 and 1:2 adducts, respectively. The stable, crystalline products we
re identified as the alpha-chlorosulfenyl chlorides 8 and 12 which yielded
corresponding disulfides after treatment with equimolar amounts of thioacet
ic acid.