METHYLCHALCOGEN DERIVATIVES OF 1,4,5,8-TETRATHIATETRALIN

Tetrakis(methylthio)- and tetrakis(methylseleno)-1,4,5,8-tetrathiatetr alin 3 and 4 were prepared by the reaction of tetrathiatetralin 2 with LDA (lithium diisopropylamide) and MeSSMe or MeSeSeMe in diethyl ethe r. A remarkable solvent effect was observed in that the similar reacti on in tetrahydrofuran gave tetrakis (methylthio)tetrathiafulvalene 5 t hrough a novel rearrangement. The iodine complex of 3 was prepared to be a rare example of complex formation in the tetrathiatetralin series .