Novel reaction patterns of carbon disulfide with organolithium compounds via cleavage of C=S bonds or via cycloaddition reactions

Carbon disulfide reacted at room temperature with 1,4-dilithio-1,3-diene species via cleavage of the C-S double bonds affording multiply substituted thiophenes or via cycloaddition reactions affording thiopyran-2-thiones. (C) 2002 Elsevier Science Ltd. All rights reserved.