The reactions of 2,6-bis(bromomethyl)-cis-tetraoxadecalin (TOD) 3 with ethane-1,2-dithiol 4 (1,2-ethylenethioglycol, ETG) and the higher PETGs in Cs2CO3 promoted processes result in new polythiamacrocycles, having PETG bridges on or between cis-TOD crown systems in the ETG:TOD ratios; 1:1 (7), 2:1 (17) and 3:1 (18), as well as the unique 2:2 (meso- and rac-8), 3:3 (9) and 4:4 (10) systems; 7 and 8 have been structurally (X-ray) analyzed. An important new observation and caveat: ETG undergoes a base (Cs2CO3, etc.) promoted oligo- and poly-merization process.
|Number of pages||3|
|Journal||Journal of the Chemical Society, Perkin Transactions 1|
|State||Published - 7 Nov 1997|