T. Shinozuka et al., STEREOSELECTIVE REACTION OF ARYLSULFANYL-STABILIZED HOMOENOLATES WITHALDEHYDES, Journal of the Chemical Society. Perkin transactions. I, (2), 1996, pp. 119-120
The reaction of arylsulfanyl-stabilized lithium homoenolates with arom
atic aldehydes gave anti-adducts with a high level of diastereoselecti
vity (up to 96% de) and fair enantioselectivity (up to 47% ee) the pre
sence of (-)-sparteine.