Cinchonine based phase-transfer catalysts were developed for enantio selective conjugate additions to electron deficient alkenes. including acylates, acrylonitrile, and chalcone. N-Trifulorobenzyl cinchoninium bromide 6 catalyst (20 mol %) in THF at -40 degrees C promoted the conjugate addition of arylketone glycolate 1 generating S-product 2 in good yields and selectivities. Catalyst, solvent, and base variations are presented along with conditions to convert the products to intermediates useful for multistep applications. (C) 2007 Published by Elsevier Ltd.