Allylic alcohols react with aldehydes, in an atom economy aldol-type reacti
on, in the presence of catalytic amounts of various rhodium and ruthenium c
omplexes. This reaction occurs with total regiocontrol under mild condition
s, but varying amounts of ketone derived from the competing isomerization r
eaction are also observed. (C) 2001 Elsevier Science Ltd. All rights reserv
ed.