Ia. Motorina et Ds. Grierson, Lewis acid catalysis of the intramolecular Diels-Alder reaction of 1-azadienes., TETRAHEDR L, 40(40), 1999, pp. 7215-7218
Copper(II) trifluoromethanesulfonate, its chiral bisoxazoline complex, and
bismuth (III) chloride efficiently catalyze the intramolecular cycloadditio
n reactions of N-vinyloxypropyl-2-cyano-1-azadienes 2. Both the scope of th
is process and the reaction conditions were studied. (C) 1999 Published by
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