Pd(OAc) 2 -Catalyzed Isomerization of Acetates of the Baylis-Hillman Adducts

In general, theyields are moderate to excellent ranging from 65 to 83%.The following procedure for converting 1 into 2 isrepresentative: the mixture of acetate 1c (560 mg, 2.08mmol), triethylamine (630 mg, 6.24 mmol) and the catalystsystem comprising palladium acetate (23 mg, 5 mol%) andtriphenylphosphine (109 mg, 20 mol%) was stirred inacetonitrile (15 mL) under nitrogen at 80