El-Sayed, I.2; Ali, O.M.2; Fischer, A.2; Senning, Alexander Erich Eugen3
1 Department of Chemistry, Technical University of Denmark2 unknown3 Department of Applied Chemistry, Technical University of Denmark
C-Sulfonyldithioformates (2) (R-1 = ArSO2, R 2 = ArS) readily add to anthracene and 9-methylanthracene (1) in a Diels-Alder fashion with formation of 9,10-dihydro-10,9-(epithiomethano)anthracenes (3) which in turn may suffer thermally induced elimination of arenesulfinic acid to yield the 9-anthracenedithiocarboxylic esters (4). The reactions with the unsymmetrical diene 9-methylanthracene take place in a highly stereoselective fashion.
Heteroatom Chemistry, 2003, Vol 14, Issue 2, p. 170-174