Chemistry Letters p. 235 - 238 (1981)
Update date:2022-08-05
Topics:
Ohmura, Haruo
Motoki, Shinichi
The reactions of aryl 2-furyl thiones with maleic anhydride and 2-norbornene gave 1,4-cycloadducts.The reactions of aryl 2-thienyl thiones with maleic anhydride gave aromatized and oxidized 1,4-cycloadducts, while the reaction with 2-norbornene gave only normal cycloadducts.In these reactions, one of the double bond in the furan or thiophene ring and the thiocarbonyl group reacted as a hetero diene system.
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