Amphoteric Character of 2-Vinyloxiranes: Synthetic Equivalents of beta,gamma-Unsaturated Aldehydes and a Vinylogous Enolate We thank Professor Batey and his group for providing the allyl and crotyltrifluoroborates. This work was supported by the National Science and Engineering Research Council (NSERC) and the University of Toronto. S.G.O. thanks NSERC for a post-graduate scholarship
Angew Chem Int Ed Engl. 2000 Nov 17;39(22):4079-4082.
doi: 10.1002/1521-3773(20001117)39:22<4079::aid-anie4079>3.0.co;2-w.