The new Mo(II) triflate complex 5 has been found to catalzye the C-C b
ond forming allylic substitution with silyl enol ethers derived from b
eta-dicarbonyls (e.g., 6 + 12 --> 14) and from simple ketones (e.g., 6
+ 13 --> 16) as nuclephiles. (C) 1997 Elsevier Science Ltd.