Literature reports on the reactivity of dicyanoacetylene (I) and its reaction products are noteworthy for their paucity. Only the addition of hydrogen chloride, ammonia, some amines, and the Diels-Alder reaction with cyclopentadiene2 have been reported. More recently it has been shown that dicyanoacetylene exhibited an exceptional reactivity as an acetylenic dienophile toward a number of 3, 4-negatively substituted furan deri~ atives.~ Its nature as ...
![5,6,7,8-tetramethylbicyclo[2.2.2]octa-2,5,7-triene-2,3-dicarbonitrile结构式](https://image.chemsrc.com/caspic/404/19004-90-1.png)