P. Rajakumar et A. Kannan, SYNTHESIS OF FUNCTIONALIZED CYCLOPHANES WITH CAGE STRUCTURE - VIA AN UNUSUAL TERMOLECULAR COLLISION, Tetrahedron letters, 34(51), 1993, pp. 8317-8320
Coupling of the tetrathiol 11 with two equivalents of the dibromide 6,
7 and 8 under high dilution technique in the presence of KOH in benzen
e - ethanol afforded the cyclophanes 1a, 1c & 1b respectively. Similar
ly cyclophane 1d was obtained from the tetrathiol 11 and tetrabromide
9.