108920-00-9Relevant academic research and scientific papers
DIMERIZATION OF (E)-2-BENZENESULFONYL-1,3-ALKADIENES. THE BENZENESULFONYL GROUP EXERTS ACYCLIC STEREOCONTROL
Hoffmann, H. Martin R.,Weichert, Andreas,Slawin, Alexandra M. Z.,Williams, D. J.
, p. 5591 - 5602 (2007/10/02)
Mild dehydration of 2-benzenesulfonyl allylic alcohols 8 afforded a series of (E)-2-benzenesulfonyl-1,3-alkadienes 1 which dimerized to functionalized vinylcyclohexenes 3 in regio- and stereodefined manner.The configuration at C-3 in 3e was determined by
4-Bromo-2-sulfolenes. Butadienyl Cation Equivalents
Chou, Ta-shue,Hung, Su Chun,Tso, Hsi-Hwa
, p. 3394 - 3399 (2007/10/02)
4-Bromo-2-sulfolene and 4-bromo-3-methyl-2-sulfolene react with alkylcuprates to give direct substitution products, with vinyl- or phenylcuprates or sulfur-containing nucleophiles to give allylic substitution products, and with strongly basic nucleophiles to give elimination products.The allylic substitution products and the isomerized direct substitution products are precursors for substituted 1,3-butadienes.Thus, these 4-bromo-2-sulfolenes serve as butadienyl cation equivalents.
