Effective catalyst for the Baylis-Hillman reaction, using 1,4-Diazabicyclo[2.2.2]octane: J. Org. Chem., 63, 7183 (1998). The uses of rare-earth metal triflates in organic synthesis have been reviewed by S. Kobayashi: Synlett, 689 (1994); Chem. Rev., 102, 2227 (2002).