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[2+2] cycloadditions of 2,2-bis(trifluoromethyl)ethylene-1,1-dicarbonitrile with enol ethers, 1,1-dimethylbutadiene, and allyltrimethylsilane

✍ Scribed by Rolf Huisgen; Reinhard Brückner


Publisher
Elsevier Science
Year
1990
Tongue
French
Weight
269 KB
Volume
31
Category
Article
ISSN
0040-4039

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The effects of substituents and solvent variation on the rate constants are in harmony with a concerted cycloaddition. In the preceding communication we described reactions of 2,2-bis(trifluoromethyl)ethylene-1 ,I-dicarbonitrile (BTF; 1) with styrenes 2 2. By rapid reversible Diels-Alder additions w