Investigation of a transition metal-assisted retro Diels-Alder reaction used in the synthesis of transition metal S2O complexes

Article abstract of DOI:10.1016/0022-328X(90)87057-K

Treatment of 4,5-diphenyl-3,6-dihydro-1,2-dithiin-1-oxide with coordinatively unsaturated transition metal complexes resulted in the production of S2O complexes and 2,3-diphenylbutadiene.A transition metal-assisted retro Diels-Alder mechanism has been proposed for this reaction.A series of IR and 1H NMR experiments and MNDO calculations on 4,5-diphenyl-3,6-dihydro-1,2-dithiin-1-oxide have been performed to gain additional information about this transformation.