Diastereoselective Synthesis of trans-2,3-Dihydrothiophenes via Multicomponent Reactions of Pivaloylacetonitrile, Aldehyde, Amine, and Thiazolidinedione - Sun, Jing; Wu, Qun; Xia, Er-Yan; Yan, Chao-Guo (Synthesis, 2010)