NbCl3-Catalyzed intermolecular [2+2+2] Cycloaddition of alkynes and α,ω-dienes: Highly chemo- and regioselective formation of 5-ω-alkenyl-1,4-substituted-1,3-cyclohexadiene derivatives
Intermolecular [2+2+2] cycloaddition of tert-butylacetylene with α,ω-dienes was successfully achieved by NbCl3(DME) catalyst to afford 5-ω-alkenyl-1,4-disubstituted-1,3-cyclohexadienes in excellent yields with high chemo- and regioselectivity.
Obora, Yasushi,Satoh, Yasushi,Ishii, Yasutaka
experimental part
p. 6046 - 6049
(2010/11/18)
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