Gw. Kabalka et al., Synthesis of (E)-1-aryl-1-alkenes via a novel BF3 center dot OEt2-catalyzed Aldol-Grob reaction sequence, J ORG CHEM, 64(9), 1999, pp. 3157-3161
The reactions of aromatic aldehydes with ketones in the presence of various
acids were examined. The reactions generate (E)-1-aryl-1-alkenes in the pr
esence of boron trifluoride diethyl etherate in nonnucleophilic solvents.