SSAs 1 -3 were synthesised through previously published methods. SSAs 4 and 5 were produced through the reaction of 4-trifluoromethyl aniline with dimethylsquarate in methanol, to produce an intermediate, that was subsequently reacted with the appropriate tetrabutylammonium (TBA) salt to give 4 and 5 as white solids in yields of 65 % and 35 % respectively.