R. Hamasaki et al., Allylation of ketones with allylstannanes catalyzed by Lewis acid-Lewis base combined reagents, TETRAHEDR L, 41(50), 2000, pp. 9883-9887
Although the Lewis acid promoted allylation of ketones with allylstannanes
gives the corresponding tert-homoallyl alcohols in lower yields in comparis
on with those of aldehydes, the use of Lewis acid-Lewis base combined catal
ysts such as Zn(OTf)(2)-2,6-lutidine and Zn(OTf)(2)-pyridine dramatically e
nhances the yield of the tert-alcohols. (C) 2000 Published by Elsevier Scie
nce Ltd.