Synthesis of reactive sulfines by flash vacuum thermolysis: Thioformyl cyanide S-oxide and thioxoethanal S-oxide

Thioformyl cyanide S-oxide and thioxoethanal S-oxide were synthesized by re tro Diels-Alder cleavage of their dimethylanthracene adducts under flash va cuum thermolysis conditions. They were characterized by low-temperature IR and NMR spectroscopy. The formation of thioformyl cyanide S-oxide was also confirmed by mass spectrometry.