Generation of ortho-quinone methides upon thermal extrusion of sulfur dioxide from benzosultones

Add time:07/14/2019    Source:sciencedirect.com

3H-1,2-Benzoxathiole 2,2-dioxides (benzosultones) undergo thermal extrusion of sulfur dioxide to form ortho-quinone methides that enter Diels–Alder reaction with maleimides to form chroman 2,3-dicarboxylic acid derivatives.

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