H. Frauenrath et M. Kaulard, ASYMMETRIC ISOMERIZATION OF 5-METHYLENE-1,3-DIOXANES TO 5-METHYL-4H-1,3-DIOXINS BY A CHIRAL RUTHENIUM(II) COMPLEX, Synlett, (7), 1994, pp. 517-518
The asymmetric double bond isomerization of prochiral 5-methylene-1,3-
dioxanes to 5-methyl-4H-1,3-dioxins with an optically active ruthenium
(II) complex is described. Enantiomeric excesses of up to 37.6% have b
een obtained.