Abstract
Efficient isomerization: The title reaction was catalyzed by the [RuCl2{(S)-tol-binap}{(R)-dbapen}]/KOH system in ethanol at 25 °C (see scheme). A series of E- and Z-configured aromatic and aliphatic allylic alcohols, including a simple primary alkyl-substituted compound (E)-3-methyl-2-hepten-1-ol, were transformed into the chiral aldehydes with at least 99 % ee. dbapen = 2-dibutylamino-1-phenylethylamine, tol-binap = 2,2'-bis(di-4-tolylphosphanyl)-1,1'-binaphthyl.
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