The Chalcogeno-Baylis-Hillman Reaction of an α,β-Unsaturated Thioester: A New Approach to α-Methylene-β-hydroxy Carboxylic Acid Derivatives - Kataoka, T; Iwama, T; Kinoshita, H; Tsujiyama, S; Tsurukami, Y; Iwamura, T; Watanabe, S (Synlett, 1999)