T. Hatta et al., SYNTHESIS OF DITHIATHIACYCLOPHANES AND TETRATHIACYCLOPHANES INCORPORATING ISOXAZOLE UNITS, Journal of heterocyclic chemistry, 34(2), 1997, pp. 579-583
The reaction of 5-bromomethyl-3-(p-bromomethylphenyl)isoxazole with o-
, m-, and p-bis(mercaptomethyl)benzenes gave the corresponding dithia-
and/or tetrathiaisoxazolophanes, whose relative yields strongly depen
ded upon the nature of the mercaptomethyl compound. The above isoxazol
e dibromide reacted with the bis(mercaptomethyl)isoxazole to afford a
mixture of two isomeric dithiaisoxazolophanes.