Phosphine-catalyzed tandem reaction of allenoates with nitroalkenes

Org Lett. 2010 Nov 5;12(21):5024-7. doi: 10.1021/ol102191p.

Abstract

A P(p-FC(6)H(4))(3)-catalyzed tandem reaction between ethyl 2,3-butadienoate and nitroalkenes has been developed, which involves a [3 + 2] cycloaddition and a subsequent umpolung addition. The asymmetric version of this tandem reaction has also been investigated by using chiral phosphanes.