A novel highly enantioselective allyl-transfer reagent. Excellent regio-, diastereo-, and enantioselectivities (usually >95% ee, >95% de) are obtained for the addition of allyl nucleophiles to aldehydes. Although this reagent is used in stoichiometric amounts, the chiral ligand and monocyclopentadienyltitanium trichloride can be easily recovered.
the dry solid must be stored under exclusion of moisture and UV at rt
(brown, tightly sealed bottle). It can, however, be handled quickly in the open, e.g. for weighing. Reactions
should be carried out in dry equipment and with absolute solvents under argon or N2.
