I found these looking through class 568 subclass 310:
4,329,506 and 4,694,107 isomerization of 2-phenylpropionaldehyde to P2P.
4,731,482 Wacker-like process for making phenylpropanones from allyl benzenes, safrole given in example 1.
Class 568 subclass 427
4,929,765 conversion of styrene oxide or glycol to phenylacetaldehyde.
568/458
2,613,223 WO3 or MoO3 and H2O2 Wacker-like reaction.
568/859
1,594,608 Styrene -> glycol using NaOCl and CO2.
568/315
1,962,476 conversion of benzaldehydes to Ph-CHOH-CO-CH3 using yeast fermentation.