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2004
Enantioselective syntheses
O 0031
A Highly Enantioselective Allyl-Transfer Through Suppression of Epimerization.
The allyl transfer reaction from chiral alcohols such as (I) to aldehydes is success44- 035 —
fully achieved with camphorsulfonic acid as mild acidic catalyst at low temperature.
These conditions prevent racemization of the resulting allylic alcohols (III) which occurs in the presence of strong Lewis acid and at higher temperature. — (LEE, C.-H.
A.; LOH*, T.-P.; Tetrahedron Lett. 45 (2004) 30, 5819-5822; Dep. Chem., Natl. Univ.
Singapore, Singapore 117543, Singapore; Eng.) — Mais
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