68438-14-2Relevant academic research and scientific papers
Thiono and Dithio Esters, XXV. - (4+2) Cycloadditions with Dithionooxalates
Hartke, Klaus,Henssen, Guenter,Kissel, Thomas
, p. 1665 - 1676 (2007/10/02)
O,O-Dimethyl dithiooxalate (1a) reacts as a 2?-component with typical dienes (e.g. 2,3-dimethylbutadiene or cyclopentadiene) as well as with the strained ?-bonds of quadricyclane to form cycloaddition products.With the energy-rich double bonds of norbornene derivatives, cyclopropenes, and benzovalene, 1a as a 4?-component furnishes cycloadducts.With cyclopentene an equilibrium of product and starting material was achieved after two weeks. 1a reacts also with substances containing activated triple bonds such as dehydrobenzene or acetylenedicarboxylic ester.
