Fig. 2: Initial test with Ph3P as ligand.

The yields refer to NMR yield using MeNO2 as an internal standard. dba (1E,4E)-1,5-diphenylpenta-1,4-dien-3-one.
The yields refer to NMR yield using MeNO2 as an internal standard. dba (1E,4E)-1,5-diphenylpenta-1,4-dien-3-one.